I have 139 flights on this combination, Brodak Hornet 40amp ESC, Hubin FM timer, Arrowind 2815/09 motor, 10/5 prop, 2200mah Thunder Tiger LIPO's, 10k launch RPM. The airplane is a Top Flite ARF Nobler. Lately it goes into limp mode shortly after take off. It runs in limp mode for maybe a minute then comes out of limp mode and runs like it supposed to. I've tried new batteries...any suggestions?