The other day the konb for my neck pickup volume fell off and I was wondering if there was any special way to repair it. I could tell by just looking at it all I would have to do is tighten it back on with an allen wrench, but is there anything I should do to make sure it dosent fall off again? I also noticed there was a little indentation where it was screwed on the metal peg from before. Any help or advice is appreciated, thanks.