I am in the process of the traditional break in procedure for my new Tsunami and all the sudden the automatic brake system and 4wd doesnt work.. When i picked it up and gave it gas, only the front 2 wheels spun. Also when i gas it, then let go of the throttle, its almost as if the throttle is stuck and it keeps goin althought i am not holding the throttle?!?!?! Any suggestions?