I am in the middle of changing out my stock pickups for a set of Seymour Duncan quarter pound jazz pickups. I have got the wiring diagram squared away, its the mounting of the pickup that I am a little confused on. I have the screws but it seems that something should go under the pickups and I have nothing. The only other thing with them was 4 little pieces of rubber tubing. I am putting them in a Fender MIM Jazz bass. Can someone help me as I am stuck right here until I get some help. Thanks