This is what happened on my Epic Victory on both flights. When I went to full flaps and crow the plane rolled heavily and we had to dial in full trim on the good aileron to get it back to no crow to level out for landing. So I landed both times without any crow. This plane is very clean and needs full flaps and 1/2" of crow to slow down for landing. The left aileron servo was limp with no drive both times. After unplugging and re plugging the servo it worked both times. We could not get it to fail again after the first flight so I decided to go ahead with the second. I am running tests to figure what went bad 2 times and can not get it to fail now. I am not sure if it a connector problem or servo problem. At least I got used to flying with gear down and either half flaps or full flaps for 2 complete flights. My original intention was to get the plane trimmed out with gear down and half/full flaps and get used to flying in those modes. I am going to replace the aileron servo and the leads for that servo as a minimum. I am looking at replacing all 4 of the 8411 wing servos with Hitec HS7955 titanium 330in/oz servos that are guarantied for use with A123 and even with LIPO batteries. I already had to replace 2 of the 8411 servos at Mississippi Jets. 2 great days of flying at Waco. Thank you Steve for helping me with the flights and takeing care of all the trimming.