My AA started doing something today and I was wondering if anybody else has experienced this. Without any input and within 5-6 feet of the transmitter, the motors start for about 1-2 seconds then stop. This has happened several times today. Otherwise, it seems to fly Ok, but I also have noticed that sometimes during flight, the motors have begun to sputter or stop for 2-3 seconds and restart. Any ideas? I have made some mods to the AA (removed lower wings and attached them to the upper wings, added front / rear landing gear - and yes, it will ROG) but I wouldn't think that those would affect the motors. I'm kinda at a loss to explain what my kid says is "the ghost plane." I have about 5 flights on this particular AA.