Still learning with this RS4 3 RTR,,,,,,,I broke in the motor as per the HPI manual, so I started to adjust the needle as described in also in the manual, but I evidently went too much one way or the other. The car died and I have not been able to re-start,,,,,,anyone know of a general starting place for the needle where I can begin working on ???? oh, I have also turned it clockwise til it closed and slowly eased it back open, but still can't find the sweet spot,,,,,,any help would be greatly appreciated??