I had a radio set up problem. This Tracker III is my first computer radio and seems to have a flawed flaperon program as it appllies "flaperon differerntial" differently to each channel. I had to set up my differential mechanically then set the sub trims and endpoints for each channel to get identical throws on both channels. Mine are set to 3/4" up and 1/2" down on high rate with sealed hinge lines and that's PLENTY fast! Measure your aileron throws to make sure they are the same side to side and that they travel further up than down.

God bless,

-BunnMan