Finally got my E0's mounted (with new KDW's) and I can't figure out how to get the plastic center caps on. I don't want to break them but they are very stubborn. Is there a trick I don't know about? Considering they came off pretty hard I wouldn't be surprised if a rubber mallet was in order. However it looks like someone was harsh on them before (they're used wheels) and one of the 4 plastic grabber dealies (with the wire around it) on one of the caps is chipped. Help!
Karl