After a few hours of running the scx6 I have noticed that when the servo gets a bit bound up the fan on the esc dips in rpm. Thinking the bec in the esc isn't quite up to the task I put a castle 10 amp bec in for the servo and put the voltage at 7.4. I wasn't sure about putting that much to the receiver/ lights, not sure what the lights are rated for. It definitely helped, but its not like your going to go Holy shit problem solved, but it definitely helps. Made a servo bypass out of a servo y harness, if you haven't done this before its really easy. Just pull the red wire out of the one that plugs into the esc and tape it off, and you done.