Hello, bought a new McCarty from Eddies guitars that came with a bad volume pot. Volume and tone were dropping in and out. Rather than send the guitar back (Because I love it otherwise) I am going to just swap the pot myself. I am reasonably skilled as an engineer and have many hours of soldering under my belt. Are there any gotchas I should look for? Also, another issue I'm seeing is that when I attempted to give it a quick setup, one of the bridge studs is extremely difficult to turn. I removed all string tension and the bass side turns easily, the treble side needs a lot of force. Im worried I might sheer it off. Any tips to loosen it up? I havent removed the bridge entirely yet to see if there is some gunk in there or something causing it not to turn, but even with no string tension I already marred the head with a coin trying to turn it. Thoughts?