diff --git a/src/dexed.cpp b/src/dexed.cpp
index f14c317..89fde5e 100644
--- a/src/dexed.cpp
+++ b/src/dexed.cpp
@@ -41,7 +41,7 @@ Dexed::Dexed(double rate) : lvtk::Synth<DexedVoice, Dexed>(p_n_ports, p_midi_in)
     voices[i].live = false;
   }
 
-  for(i=0;i<156+4;++i)
+  for(i=0;i<160;++i)
     data_float[i]=static_cast<float>(data[i]);
 
   currentNote = 0;
@@ -50,6 +50,7 @@ Dexed::Dexed(double rate) : lvtk::Synth<DexedVoice, Dexed>(p_n_ports, p_midi_in)
   controllers.foot_cc = 0;
   controllers.breath_cc = 0;
   controllers.aftertouch_cc = 0;
+  controllers.masterTune=0;
 
   bufsize_=256;
 
@@ -70,6 +71,8 @@ Dexed::Dexed(double rate) : lvtk::Synth<DexedVoice, Dexed>(p_n_ports, p_midi_in)
   engineType=0xff;
   setEngineType(DEXED_ENGINE_MARKI);
 
+  onParam(155,static_cast<float>(0x3f)); // operator on/off => All OPs on
+
   //add_voices(new DexedVoice(rate));
 
   add_audio_outputs(p_audio_out);
@@ -126,6 +129,8 @@ void Dexed::set_params(void)
 {
   //TRACE("Hi");
 
+  _param_change_counter=0;
+
   bool unisono=bool(*p(p_unisono));
   uint8_t engine=uint8_t(*p(p_engine));
   float f_gain=*p(p_output);
@@ -313,11 +318,15 @@ void Dexed::set_params(void)
   onParam(143,*p(p_pitch_mod_sensitivity));
   onParam(144,*p(p_transpose));
   // 10 bytes (145-154) are the name of the patch
-  onParam(155,0x3f); // operator on/off => All OPs on
 
-  // Pitch bend
-  controllers.values_[kControllerPitchRange]=static_cast<int16_t>(*p(p_pitch_bend_range));
-  controllers.values_[kControllerPitchStep]=static_cast<int16_t>(*p(p_pitch_bend_step));
+  // Pitch bend (added at the end of the data[])
+  onParam(156,*p(p_pitch_bend_range));
+  onParam(157,*p(p_pitch_bend_step));
+  onParam(158,*p(p_mod_wheel_range));
+  onParam(159,*p(p_mod_wheel_step));
+
+  if(_param_change_counter>PARAM_CHANGE_LEVEL)
+    panic();
 
   //TRACE("Bye");
 }
@@ -448,19 +457,21 @@ void Dexed::GetSamples(uint32_t n_samples, float* buffer)
 
   if(++_param_counter%32)
   {
+    uint8_t op_out=controllers.core->op_out(data[134]); // look for carriers
+
     for(i=0;i < MAX_ACTIVE_NOTES;i++)
     {
       if(voices[i].live==true)
       {
         uint8_t op_amp=0;
-        uint8_t op_out=controllers.core->op_out(data[134]);
         uint8_t op_carrier_num=0;
 
         voices[i].dx7_note->peekVoiceStatus(voiceStatus);
 
         for(uint8_t op=0;op<6;op++)
         {
-          if((op_out&op)==1)
+          TRACE("op=%d op_out=%d 2^op=%d %d",op,op_out,static_cast<uint8_t>(pow(2,op)),op_out&static_cast<uint8_t>(pow(2,op)));
+          if((op_out&static_cast<uint8_t>(pow(2,op)))>0)
           {
             // this voice is a carrier!
             op_carrier_num++;
@@ -663,13 +674,31 @@ void Dexed::onParam(uint8_t param_num,float param_val)
     uint8_t tmp=data[param_num];
 #endif
 
-    if(param_num==144)
+    _param_change_counter++;
+
+    if(param_num==144 || param_num==134)
       panic();
 
     refreshVoice=true;
     data[param_num]=static_cast<uint8_t>(param_val);
     data_float[param_num]=param_val;
 
+    switch(param_num)
+    {
+      case 156:
+        controllers.values_[kControllerPitchRange]=data[param_num];
+        break;
+      case 157:
+        controllers.values_[kControllerPitchStep]=data[param_num];
+        break;
+      case 158:
+        //controllers.values_[kControllerModRange]=data[param_num];
+        break;
+      case 159:
+        //controllers.values_[kControllerModStep]=data[param_num];
+        break;
+    }
+
     TRACE("Parameter %d change from %d to %d",param_num, tmp, data[param_num]);
   }
 }
diff --git a/src/dexed.h b/src/dexed.h
index 47977cb..b4705d6 100644
--- a/src/dexed.h
+++ b/src/dexed.h
@@ -34,6 +34,8 @@
 #include "trace.h"
 #endif
 
+#define PARAM_CHANGE_LEVEL 10 // when a sound change is recognized
+
 struct ProcessorVoice {
     uint8_t midi_note;
     bool keydown;
@@ -117,9 +119,10 @@ class Dexed : public lvtk::Synth<DexedVoice, Dexed>
   private:
     double _rate;
     uint8_t _param_counter;
-    float data_float[156+4];
-    //uint8_t data[156];
-    uint8_t data[156+4]={
+    uint8_t _param_change_counter;
+    float data_float[160];
+    //uint8_t data[160];
+    uint8_t data[160]={
       95, 29, 20, 50, 99, 95, 00, 00, 41, 00, 19, 00, 00, 03, 00, 06, 79, 00, 01, 00, 14,
       95, 20, 20, 50, 99, 95, 00, 00, 00, 00, 00, 00, 00, 03, 00, 00, 99, 00, 01, 00, 00,
       95, 29, 20, 50, 99, 95, 00, 00, 00, 00, 00, 00, 00, 03, 00, 06, 89, 00, 01, 00, 07,
diff --git a/src/msfa/dx7note.cc b/src/msfa/dx7note.cc
index ed6bb27..7250690 100644
--- a/src/msfa/dx7note.cc
+++ b/src/msfa/dx7note.cc
@@ -137,7 +137,7 @@ Dx7Note::Dx7Note() {
 }
 
 //void Dx7Note::init(const uint8_t patch[156], int midinote, int velocity, int fb_depth) {
-void Dx7Note::init(uint8_t patch[156], int midinote, int velocity, int fb_depth) {
+void Dx7Note::init(const uint8_t patch[160], int midinote, int velocity, int fb_depth) {
     int rates[4];
     int levels[4];
     for (int op = 0; op < 6; op++) {
@@ -190,23 +190,8 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
     int32_t pitch_mod = max(pmod_1, pmod_2);
     pitch_mod = pitchenv_.getsample() + (pitch_mod * (senslfo < 0 ? -1 : 1));
     
-#ifdef DEBUG
-    // ---- PITCH BEND ----
-  // hardcodes a pitchbend range of 3 semitones, TODO make configurable
-  int pitchbend = ctrls->values_[kControllerPitch];
-  int32_t pb = (pitchbend - 0x2000) << 9;
-  pitch_mod += pb;
-  for (int op = 0; op < 6; op++) {
-    params_[op].level_in = params_[op].gain_out;
-    int32_t level = env_[op].getsample();
-    int32_t gain = Exp2::lookup(level - (14 * (1 << 24)));
-    // int32_t gain = pow(2, 10 + level * (1.0 / (1 << 24)));
-    params_[op].freq = Freqlut::lookup(basepitch_[op] + pitch_mod);
-    params_[op].gain_out = gain;
-  }
-#endif
-
-/*    int pitchbend = ctrls->values_[kControllerPitch];
+/*
+    int pitchbend = ctrls->values_[kControllerPitch];
     int32_t pb = (pitchbend - 0x2000);
     if (pb != 0) {
         if (ctrls->values_[kControllerPitchStep] == 0) {
@@ -218,8 +203,9 @@ void Dx7Note::compute(int32_t *buf, int32_t lfo_val, int32_t lfo_delay, const Co
         }
     }
     pitch_mod += pb;
-    pitch_mod += ctrls->masterTune; */
-TRACE("pitch_mod=%d pb=%d");
+    pitch_mod += ctrls->masterTune;
+*/
+//TRACE("pitch_mod=%d pb=%d");
 
     // ==== AMP MOD ====
     uint32_t amod_1 = ((int64_t) ampmoddepth_ * (int64_t) lfo_delay) >> 8; // Q24 :D
diff --git a/src/msfa/dx7note.h b/src/msfa/dx7note.h
index 77c5e48..6b6a108 100644
--- a/src/msfa/dx7note.h
+++ b/src/msfa/dx7note.h
@@ -37,7 +37,7 @@ class Dx7Note {
 public:
     Dx7Note();
     //void init(const uint8_t patch[156], int midinote, int velocity, int fb_depth);
-    void init(uint8_t patch[156], int midinote, int velocity, int fb_depth);
+    void init(const uint8_t patch[160], int midinote, int velocity, int fb_depth);
     
     // Note: this _adds_ to the buffer. Interesting question whether it's
     // worth it...