Man I'm running a spektrum dx3r , hi-tec 7955 with a 1500 mah 7.4 v 2s lipo and I am at wits end, the damn thing will run flawless at one race and do nothing but glitch at the next race. It glitches in the exact same 4 spots on the track. I guess I'll have to put the damn regulator back in it unless someone has a better idea. This is suppose to work without a regulator.