so i got my double adj steeda uppers and weight jacker lowers in. i set the pinion angle to what might be -2* according to steeda's instructions on the length of the uppers, but i don't think that is precise at all. i've got the measuring tool to find the pinion angle through the crank, so that is under control. here is my question, as it sits now with the "-2*" angle...the rubber bumper that hits the differential and keeps the car from bottoming out is resting on the differential quite a bit, and it causes alot of squeek. is the bumper supposed to be shaved or swapped out with an aftermarket bumper or is it supposed to rest on the diff? also i've been told that i can take the wishbone off the diff now that i have 4.10's as it is now useless. is this correct?