diff --git a/MicroDexed.ino b/MicroDexed.ino
index c7c3d64..5a748d9 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -669,12 +669,12 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
           Serial.println(F("BANK-SELECT MSB CC"));
 #endif
           configuration.performance.bank[instance_id] = constrain((inValue << 7)&configuration.performance.bank[instance_id], 0, MAX_BANKS - 1);
-          load_sd_voice(configuration.performance.bank[instance_id], configuration.performance.voice[instance_id], instance_id);
-          if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_voice_select))
-          {
+          /* load_sd_voice(configuration.performance.bank[instance_id], configuration.performance.voice[instance_id], instance_id);
+            if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_voice_select))
+            {
             LCDML.OTHER_updateFunc();
             LCDML.loop_menu();
-          }
+            } */
           break;
         case 1:
 #ifdef DEBUG
@@ -731,12 +731,12 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
           Serial.println(F("BANK-SELECT LSB CC"));
 #endif
           configuration.performance.bank[instance_id] = constrain(inValue, 0, MAX_BANKS - 1);
-          load_sd_voice(configuration.performance.bank[instance_id], configuration.performance.voice[instance_id], instance_id);
-          if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_voice_select))
-          {
+          /*load_sd_voice(configuration.performance.bank[instance_id], configuration.performance.voice[instance_id], instance_id);
+            if (LCDML.FUNC_getID() == LCDML.OTHER_getIDFromFunction(UI_func_voice_select))
+            {
             LCDML.OTHER_updateFunc();
             LCDML.loop_menu();
-          }
+            }*/
           break;
         case 64:
           MicroDexed[instance_id]->setSustain(inValue > 63);
@@ -816,10 +816,16 @@ void handleControlChange(byte inChannel, byte inCtrl, byte inValue)
           MicroDexed[instance_id]->notesOff();
           break;
         case 126:
-          MicroDexed[instance_id]->setMonoMode(true);
+          if (inValue > 0)
+            MicroDexed[instance_id]->setMonoMode(true);
+          else
+            MicroDexed[instance_id]->setMonoMode(false);
           break;
         case 127:
-          MicroDexed[instance_id]->setMonoMode(false);
+          if (inValue > 0)
+            MicroDexed[instance_id]->setMonoMode(true);
+          else
+            MicroDexed[instance_id]->setMonoMode(false);
           break;
       }
     }
diff --git a/dexed.cpp b/dexed.cpp
index 8ab5b85..9049849 100644
--- a/dexed.cpp
+++ b/dexed.cpp
@@ -753,6 +753,7 @@ void Dexed::setATController(uint8_t at_range, uint8_t at_assign, uint8_t at_mode
 void Dexed::setPortamentoMode(uint8_t portamento_mode, uint8_t portamento_glissando, uint8_t portamento_time)
 {
   controllers.portamento_cc = portamento_time;
+  controllers.portamento_enable_cc=portamento_mode>63;
 
   if (portamento_time > 0)
     controllers.portamento_enable_cc = true;
diff --git a/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.md b/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.md
index 0c58f6d..b9e5c40 100644
--- a/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.md
+++ b/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.md
@@ -951,16 +951,16 @@ Another way of editing voice presets is to use an editor like Edisyn. For downlo
 
 | MIDI-CC# | Target |
 |:--------:|:-------|
-| 0        | Bank-Select MSB |
-| 1        | Modulation wheel |
-| 2        | Breath controller |
-| 4        | Foot controller |
+| 0        | Bank-Select MSB (currently unused)|
+| 1        | Modulation wheel range|
+| 2        | Breath controller range|
+| 4        | Foot controller range|
 | 5        | Portamento time |
 | 7        | Volume |
-| 10       | Panorama |
+| 10       | Panorama (0-62 = left, 63-64 = middle, 65-127 = right)|
 | 32       | Bank-Select LSB|
-| 64       | Sustain |
-| 65       | Portamento mode |
+| 64       | Sustain (0 to 63 = Off, 64 to 127 = On)|
+| 65       | Portamento (0 to 63 = Off, 64 to 127 = On)|
 | 103      | Filter resonance |
 | 104      | Filter cutoff |
 | 105      | Delay time |
@@ -968,9 +968,18 @@ Another way of editing voice presets is to use an editor like Edisyn. For downlo
 | 107      | Delay volume |
 | 120      | MIDI panic |
 | 121      | Reset controllers |
-| 123      | Notes off |
-| 126      | Modo mode on |
-| 127      | Modo mode off |
+| 123      | All notes off |
+| 126      | Monophonic mode (0 = Polyphonic, >0 = On)|
+| 127      | Polyphonic mode (0 = Mono, >0 = On)|
+
+---
+> __Hint on bank and voice selection:__
+> If you want to select a new voice preset, you can send a program change command.
+>
+> To change the bank there are two MIDI CCs (0 and 32), where MIDI CC 0 is currently not used.
+>
+> So to select a new voice preset you either have to send a program change command (then the bank is not changed) or change with MIDI-CC 32 the bank number followed by a program change for the voice preset number.
+---
 
 <div style="page-break-after: always"></div>
 
diff --git a/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.pdf b/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.pdf
index 4c7a2df..d8f6137 100644
Binary files a/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.pdf and b/doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.pdf differ