NEED HELP! Losi xcelorin
 

For some reason my xcelorin 4.5t combo doesnt brake. I have tried updating firmware and altering settings like drag brake, brake, motor timing, pretty much everything! My transmitter is calibrated to the esc fine. This has me puzzled. It worked fine the last time i used it which was 4 or 5 months ago but since then NO BRAKES! which is a bit risky in a fast touring car :confused: has anyone experienced the same problem or know what to do? thanks