I have a 31cc Ryobi I have converted and the engine runs great except for on thing. The engine seems to vibrate so mush the coke starts to close while I am flying. This causes a big problem. I have a rubber band setup on it to keep the choke open, but I don't like this idea. Are any on you out there having the same problem? I need to figure out how to get the engine to be a smoother running engine or do something with the choke. I am thinking of just taking the choke off for now. What do you conversion wizards suggest? I believe my vibration my be due to an unbalance MAS 18x8 prop?

Thanks