I am new to RC cars and my step son recently purchased a shockwave. We have used it 8 to 10 times and now all of a sudden we have lost throttle control from the remote to the car. We have steering but no throttle. Iwas just wondering if anyone would be willing to help out a new guy and give me some tips on what Ishould be looking for to get our throttle control working again. Thanks you.</p>