I found a great wrench about 2 miles from me that knew SU's from the ground up. He spent about an hour on my truck, and now it runs like a Rolls. It cold starts with no choke, and runs quietly, accelerating away without a stumble immediately. Gas mileage improved markedly, and acceleration thruout the rpm range is quite satisfactory. He did not rebuild the carb...just took it apart and blew air thru it (and carb cleaner), and reset to proper specs. Transformed the trucks performance....night and day. SU's are known for NOT having issues, once setup properly. They seem way $pendy on Ebay tho.....seem to range around $400 for a used one. I'm sure one could be had somewhere for $50?