Originally Posted by BarracudaHockey

Yep.

The front mounted carb choke plate is your culprit, in the Spitfire it comes right in that intake, hits the choke plate and goes straight down, leaning out the engine and making it quit but it will run on the ground forever just fine.

The easy solution is to create an air dam, higher than the choke plate, mine is nothing more than aluminum foil thats held in place with a zip tie, its not pretty but it works like a champ.