Hi Rick,

What are you using this plane for? 3D or Pattern? I have had 3 C-Arf 2.6s and they flew better right on the suggested "pattern cg" BUT they needed down elevator to fly upside down! Try decreasing your down elevator throw and expo until you're comfortable flying it upside down. I tried adding lead to the tailwheel until it flew well upside down only to have a plane that was real twitchy everywhere else. (not very high scoring at contests) Various other mixes will help too.......Down elevator mixed into off throttle , Pitch correction ......mixes off for rolling turns etc...Various mixes on and off for different maneuvers.....

Hope this helps, Dave