My Bass Guitar (Fender P-Bass)'s one pick up is broken!. It still works but it but its like fallen into the bass on the side!. I try screwing the bolts on the sides to raise it up but it only goes up slightly!. It doesn't stay up straight!. It's like slanted diagonally!. I could use my fingers to pull it so it's straight but when i let go, it falls back into the bass again!. Something inside the bass is broken!. how do i fix it!? Www@QuestionHome@Com