Thanks for the response Zeeb.
Updated information.
The mix is setup as FLP/LAL normal curve, 100%/100%, 0% offset.
When comparing the servo setups for the two airplanes the first one (30CC Ultra Stick) both ailerons are reversed. This airplane (the red and white Cub) one aileron is reversed and the other is normal. So far this is the only difference I can find and I am not sure how to deal with this in the mix. I have included the SPM file if it will help.
Thanks Red