If this has been addressed I'm sorry but I could not find anything on it . I just finished my 30 cc homelite conversion and put it in a hanger 9 cap 232.I ran it up and down the road to see how it handled and noticed while it was sitting still the rudder was jerking up and down and the motor also was fluctuating. what can I put in it to stop this as I sure it is not flyable this way.