so i've heard nothing but good about the dimarzio model j's. the only thing i'm not crazy about it the adjustable pole pieces. has anyone had any problems with them coming loose or moving? i'm thinking that when i have them installed, i could have the guy doing it put some loctite on them or something so they don't move. what do you all think? or is there something else out there that's very similar to it with non adjustable pole pieces. oh yeah...i plan on staying completely passive and wiring them for standard parallel v/v/t wiring.