Okay, first off where in CO are you?
Second, test the TPS per the instructions detailed in the TSRM:
http://www.cygnusx1.net/Supra/Librar...spx?S=FI&P=101
EDIT: Oh, and I've seen 7M's idle smooth as silk even with the timing off by 15?. Mine. It's part of the beauty of an inline 6.