For some reason my master volume on my Amp Head has now become my Chorus control. Regardless of if I turn the actual chorus knob all the way down it will jump up to where my master volume knob is at... The only way I have found to prevent this is to switch my sound channel after i set the Master Volume. Has anybody had this issue as well? If so how do i fix this problem? It is a pain when trying to level my sound when I practice or Jam