Quote:
Originally Posted by lamawithonel
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Those bolts would help take up the slop in the holes, but they don't address the uneven mating surfaces between the body and the top plate of the subframe bushings as well as the support arm to body connections. These surfaces aren't planed flat nor are they perfectly parallel. The rigid collar's cone actually helps support the bolts, and prevent shearing, while the washers actually lock the mating surfaces together.