When I bought my 93, it made a tinging noise from the left rear whenever I took off from a stop. The guy I bought it from thought I was going to have to tear it apart. So the other day, I took the wheel off and a piecve of metal fell out. It was the metal weight that it supposed to be welded to the drum. I took the other wheel off and this weight was loose in there. So my question is whether it hurts anything not having those weights on there. I can't say I feel any vibration, then again this thing rides rough. Thanks