I have run the engine many times (>2 hrs), two weeks ago ran it for the first time off of the wing tanks. Today it will only run with the "choke" on dying instantly if released. My theory is that I did not rinse my tanks well enough or the mo-gass released some spuge that fowled the main carb. I think it runs on the starting carb as this may be a different path for the fuel.
Any ideas before I disect my carborators? not somthing I am looking forward to given I was hoping for final inspection next week