Most of the time I catch it in time and keep it from stalling but when I rarely miss it and it stalls, it can take a bit of starting before it will hit again. Float levels are good. I have also noticed that going a down a steep hill and while off the throttle that it seems to start running a little rough but the speed/rpm is up enough to keep it from stalling. I'll try the extension, and would it be a good idea to go ahead with a wooden spacer under the carb just for good measure and with the warmer weather?