Any gear heads out there will knowledge on go kart repair? Bought my 8 year old a Razor Drifter go kart (blue) and the thing has stopped working - charged the battery and when powered up, throttle light says fully charged, but when throttle is pressed down, nothing happens...no clicking sound, nothing. Replaced the battery, charged and getting same results...anybody have any clue as to what I do next? I am not mechanical and have scoured google and YouTube...lost.