Your engine is out of tune and if it is inverted or a few degrees off and your fuel tank is in its original slot, your compounding the problem and no matter how well you think your engine is dialed in, unless you lower the tank, your going to have problems.

I have several glows of all sizes and inverted and no deadsticks in a few years, its not a gift, I just pay attention. If you want a perfectly tuned engine. Then while the engine is at an idle, remove the fuel line from the carb or pinch off the fuel line. Listen to the rpms as the engine quits running.

If the rpms increase, your low end setting is to rich. If the rpms just go down and quit. to lean. I set mine for a very slight increase. Once set, you should not have to mess with the low end again unless some other thing happens or a change of season.

I can be this easy.