Hello. Long time reader first time asking for help on a thread.. I have some experience. My father was a master electrician and had me practice soldering In my early teens.. I'm 46. I have previously modified a Xone 23C to rotary years ago but it was a kit so I am not sure which alps Potentiometer to choose for both main channels. I have spare PC boards to replace broken faders that just lock in to the main board so that I don't **** the mixer up. I will drill holes in the faceplate where the faders used to be until I can source a new one minus the fader slots.