Don't get discourged. I have a similar glitching problems with a Airtronics MX3 in a G-Maxx. Tryed the foil, mylar, rearranged wires, setup, a dozen times with no success. I have since installed a 2 channel AM radio receiver, it works flawless. Currently run single speed. I read of a similar problem in another forum, the user stated they contacted Airtronics, "there may be an issue with some of the systems, send it in". I will also give them a call. Keep your progress updated, I'm curious of your results.