Hope someone can help me out here. Just bought a second hand Chris Robertson signature model that had a Pearly Gate pickup installed in the bridge by the previous owner. The issue I'm having is that the volume and tone knobs are loose. I thought at first that the nuts weren't tightened enough and took the knobs off to tighten them, but came to find that the actual posts themselves are rattling around. They work fine and all, but I was wanting to replace them as it's irritating. My question is since the neck has a P90 does that mean the volume pot for it would be 250k and the bridge humbucker is a 500k coil tap pot? Pardon such an elementary question, but I just wanted to make sure I was going to order the right thing. I don't have much experience with P90s but I assume they'd have 250k like a single coil
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