I just got a used g&l L2500. I noticed a couple of washers underneath the neck bolt screw heads had play in them. When i went to tighten them they were frozen in place. I finally got a couple loose enough to take out but forgot to fully detune my bass when doing so because I panicked. After, i took things apart the right way and blew out the drill holes for the neck with a can of compressed air and applied candle wax to the neck screws threads. Everything went together fine after. How much damage did I cause and why did this happen?