servo problem? Need help?

[mad_mudder]

I was driving my nitro pede today and it was runing great until i jumped it and it hit the ground hard and flip. I thought everything was ok untill I gave it some gas and then I braked and when It was at a stand still and not giving it any gas it would go all of a sudden and then stop and go then stop and then go agine. It keeps doing this and i don't know whats wrong with it. I changed the battery's and that did not help. Has anybody had this problem? If so how can I fix it? I need help.
Thanks

[hpiman]

My T-maxx is doing the same thing.Im about ready to kill it!!!!!!!

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If it dont go fast then I dont want it

[mad_mudder]

Do you know how to fix it? If so how?