I can not get a tight seal between the butterfly blades and the housing/base of one of my 2gc carbs; thus there is a great vacuum leak through this carb, which messes up everything. Any ideas where I can get either one or three new bases? Someone has warned me about Vintage Speed, and Hot Rod Carb wants 180 bucks each. So, know of anyone else? Or a way to fix the leak? The carbs have no ID number on them, they are three 2gc's, with two of them set up or converted to run as end carbs for a tri power. I've tried all I know to fix the leaking but with no luck. Thanks - kip