I recently bought a new Vela from Sweetwater. Amazing guitar but during my first couple gigs playing with it, the bass side of the neck pickup gradually starts dropping down and i have to move it back up after each set. It is damn near flush with the pickgaurd after playing a 45 minutes set. I'm guessing the vibrations of playing is making the screw wiggle it down? I haven't had a chance to look under the pickgaurd yet to see if anything obvious is going on. Thinking (hoping) that i may need to just replace the pickup height spring?... Has anyone heard of this or ran into this issue?