Hello... i have a carvin lb-75 with the MM Humbucker in it (yes i know those aren't too cool) but during a show the other day i was playing and noticed that my g string wasn't making noise because the pole pieces were touching the string. It seems to me like the pickup had vibrated itself loose. I pressed down on the pup and used my other hand to tighten the screw. This worked for the rest of the show but since then the same thing has happened again. Does anyone know how to prevent this from happening? Has anyone had the same problem? Does threadlock work in wood? Thanks for any help.