Warren, I doubt you have done anything "wrong" to the car. I took the car back to the local shop that built the transmission the next day. I remember the car wouldn't shift into third gear on the way to the shop. I didn't ask the guy what exactly was wrong with it, but he seemed to know when I explained what the car was doing. I assume an adjustment just needed to be performed. They dropped the transmission pan and fixed the problem. Within and hour or two it was fixed and has been running fine ever since. He didn't charge me anything for the adjustment.
I hope your issue isn't any more involved than mine. I'll bet you are up and running pretty soon.
