I just installed a PST ploygraphite front end kit. The rubber bumpers under the upper a-arms wont stay in. After I installed the coil spring and lowered the lower a-arm with a floor jack, the upper arm florces the bumper down and bends it over at a 90 degree towards the back side of the wheel. It forced it so hard, it broke off the mounting nipple.

I tried again, and even greased the top of the bumper and tried to force it into place. That didn't work either. Your help would be much appreciated. Thanks, Tom