If you decide to go back today please check on something for me. I posted a short while ago about the WD with the serial number stamped next to the break cover. I've asked a lot of old AC enthusiests about this and none have ever seen the number stamped there...one would not believe it until he came over and seen it for himself...he used to work for an AC dealer! It would be at least an interesting piece of AC trivia to know how many WD/WD45's were stamped like this. May be someone at the gathering might know.