Ok, got carb off, taken apart and reassembled. Everything looks fine inside. Carb back on and same problem. Im going to check for intake manifold leak tonight after work, and I want to run it off a different fuel supply just to rule out bad fuel. And a call to Holley this a.m. to see what they suggest. ****Runs fine with choke out, and once choke pushed back in...shuts off.