I broke the solder attaching my strat ground wire to the tremolo spring claw. What's the purpose of the ground? Aside from safety does it help the pups or other components function? I ask because after it detaching, my strat sounds like it does with my OD pedal off, even though it's on. Sounds like just the amp gain is up. Just very mildly dirty. But my other girls sound fine. How does a detached ground apparently kill the pup output?