The retracts will not operate with the FrSky 7 channel recievers I purchased for this plane from Value Hobby. This threw me for a loop. I thought I oriiginally had bad Y-harnesses. Even removing the retract and plugging it directly into the FrSky recievers did not work. When I switched to a full size 2.4 orange reciever from Hobby King they work great. Very nice looking plane. Will be flying it when the wind stops blowing at 20 mph. I also had a problem with a pulled out wire on a lead from the ESC to the reciever.