I have a zenoah g38 on a 1/4scale cap 232 and love the motor to plane combo, but I cannot get it to run perfectly. When the engine is at full throttle (butterfly all the way open) it will die although at about 3/4 throttle it seems to be running at full throttle, with a nice high rpm. I've taken the carb completely apart and cleaned everything thoroughly and replaced fuel lines and made sure I have good fuel pressure but when it all went back together I have the same problem. the engine idles fine and I cannot tune the problem out with the needle valves, I have an 18x6 for a prop.
any suggestions?