HV-maxx won´t go reverse

[BrianG]

Is there a setting on the ESC where you can widen the neutral range? Short of replacing the throttle pot (or the whole radio), this would be the easiest solution.

If it IS a neutral range issue on the radio, you could play with the throttle trim until it does work. I'm sure the ESC has a range where it will register neutral so it should be fairly easy to find a good spot that works.