A friend of mine gave me his Senior Telemaster 9 years ago. The airplane had been sitting for about 20 years or more. He flew the airplane 3 or 4 times and then had the Telemaster blow out of the back of his truck on the way to the field. I took the old covering off and rebuilt the airframe. The airframe looks good with no warps. I covered the airplane in yellow Super Coverite to look like a Cub. I installed a MVVS .61 engine and JR radio equipment. I noticed on the first takeoff that the rudder is inadequate with a crosswind so I took off on the grass runway. After takeoff the airplane didn't want to turn so I yelled "HEADS UP" because the airplane was headed for the flight line. I used the rudder to get the airplane back on the ground. After inspecting the airplane and determining the ailerons were working, I took off again. Again I had the same problem. I can move the ailerons full travel and the airplane won't roll. I'm using an aileron servo in each wing. The airplane also isn't stable in the roll axis(doesn't want to trim out). Because I don't have a manual I just eyeballed the amount of aileron travel. I'm not using any aileron differential which could be part of the problem on a flat bottom wing. The only mod to the kit besides 2 aileron servos is the wing bolts for mounting the wing. I'm looking for suggestions because my smaller Telemaster flies great except for lack of rudder control(too small of rudder area).

Thanks,
TF