Sean Murphy Induction sells rebuilt Q Jets that are primo. He does all of the shaft bushings, etc. We have bought from him; they ask basic stuff about your engine and when you get the carb, you bolt it on and go. The thing is correct right out of the box.

His web page is

http://www.smicarburetor.com/products/?sfID1=28&sfID2=9

I recommend these boys.

Mike in Tucson