Something must have fallen on my Stereo memory man. The white "hazarai" knob's potentiometer got hit and bent, and now the push-pusll functionality doesn't work. It's still possible to change from one mode to another, but without the memorized settings, this thing got a lot less useful. I opened up the back and the circuit board covers everything, so it would have to be removed in order to replace the potentiometer. My question is, how risky a fix is this? I am NOT good with a soldering gun and would have to invest in a real one. Am I risking destruction of the circuit board if I remove and replace it in order to get the new potentiometer in?