I have seen several post but no real answer. I have the Robin Suburu 33cc four stroke on a friction drive. Whenever I apply full throttle under load the engine will quit. First time it happened I was trying to pull a 10% grade and had to coast back to the bottom. I have figured out that it is "fuel starvation" because if I let up on the throttle about 1/4" before it dies then it will regain power. I have seen some post about this so I know others are having the same problem. Anyone found a fix?