Sorry it has taken so long to get back to this thread. Got really busy today.
That plane is much smaller than the RCH Trainer so the electronics will not be adequate for it.
I did look up the plane, and if it's the plane I was looking at (about 25") then you most likely have the one with the SAFE gyro in it. If that is correct, then I would guess since it's rolling over after takeoff, that the gyro is in the plane backwards. This would cause everything but the rudder to be correcting backwards. If the right wing is going down (right roll) then the right aileron should go down as well to counter the movement. If the tail goes up, the elevator should go up. This is by moving the plane itself, not with the sticks. You may need to give it a little throttle to activate the gyros though.
Hope this helps.