Carter competition series carb problem

I had the exact same problem on my T-Quad. It would stumble right off idle, no matter how hot or cold the engine was. (If you don't have a choke and the engine is cold, you will get the same symptoms).

At first I thought that i might of been just that... the choke. I even went so far as to fashion a metal plate to partially cover the primary choke horn so to have a permanent choke. That solved the symptom, but not the problem. Ultimately, I found out the real problem was a vacuum leak under the base of the carb. Needed the correct gasket, not the one I was using for the Q-Jet that the T-Quad replaced.

I found the problem by spraying the areas that are prone to vacuum leaks(carb base, intake to head gasket area) with Ether(starting fluid). It was pretty evident I had a leak under the carb when the engine revved up after a quick shot of Ether....

Hope this helps...