No they all suffered to some extent. My 70 was owned by the original owner and me, and both of us were amateur radio operators, and both of us had "gear" in the car at some point. My 70 showed up damaged the ammeter and bulkhead maybe 3 years after it was new. The ammeter was mounted through the Ralleye cluster which was plastic, and when things heated up, those studs get loose, the plastic softens, and the problem gets worse. I don't remember anymore, but I think I used jam nuts to help the problem. Some have advocated cleaning the studs and ammeter "shunt" and soldering them together