I don't really don't know of anyone who is more adept at the Qjet rebuilding biz and I don't know of anyone who Cliff could suggest. I know other carb builders that are very good but if you need a custom build, Cliff is the guy to go to. Some places don't or wont build a carb unless it is stock and some don't know all the tricks to make them run right. Then there are the "prebuilt" carbs that you can buy. Ok, maybe, but I doubt that any of these carbs are totally done right for a specific application.