We have a 2000 Lincoln LS with the 3.9 V8 and the throttle quit working the other day. pushed the pedal and nothing. The problem was a small linkage rod that is supposed to have some plastic bushings in it that had decomposed and went away causing the little c clips to pop off. Dealer said only way to get them is buy a new throttle body for $400. Any one have any solutions as to were to get these little plastic bushings?