So guys, I got a HPI Sprint 2 Sport for christmas, its second hand but everything on the car is stock, I'm having an issue where the car will sync the ESC with the Radio and will pull away as normal, however as soon as i let go of the accelerator the motor cuts out and will not run again, the strange thing is that the ESC and radio link is still there as i can turn the wheels and the servo will still work as normal, any help guys? thanks in advance