Hello everyone, I recently decided to try and fix up my old Peavey Milestone II which is a basic PBass Copy. The pickguard was damaged so I bought a replacement. Screws came out fine but I really cannot figure out how to get the Tone and Volume knobs off so I can completley remove the pickguard. I've tried unscrewing them but it seems to not budge either way I turn and have also tried to just pull them off but that didn't work. The bass is pretty beat up so maybe they are rusted or some such thing. Or it could be something very simple-I'm bad at this kind of stuff. Any help would be greatly appreciated.