johnny dont know your age but back in the 60s i got to be in the pits with richard pettys crew at mich. also sepnt time in drivers meetings and got to know some of there tricks, the on i remember most was when petty ran a ford which had coil springs and during his first pit stop a wooden block fell out of the left front spring and i picked it up before a official saw it, back then they only had one offical per team. the wooden block was designed to break during the race to lower the car,