Hello.  My Minibrute makes incorrect static when I turn the Master Volume knob while normal sound is being generated.  If I'm not holding a note and the output is silent, then when I turn the volume knob there is no static -- it's normal behavior.  But if I am holding a note, and audio is being output, then when I turn the volume knob I get unacceptable static.  
I've tried blowing out the pot with an airblaster, and I've also squirt a small amount of Deoxit Lube into the pot.  It made no difference.  Any advice would be appreciated.