The twitches
 

My buggy twitches only when it is running can't figure it out

your servos twitch? be specific. if it's the servos, it' most likely because the center idle gear is worn, and your servo are constantly trying to center itself. replace it and they should be good again.

Pull out your reciever and shake it if you hear something rattling then you
have some dirt inside clean it out. if not wrap the reciever in some foam or some other padding to reduce vibration. and keep your wires as far from the engine as possible.

Are they JR servos. Then that's called the JR jitters and they all do it.

I do ha a jr steering servo that I changed because my origanl broke by not steering and went off the road when I got to the car it was twitching and it only does it when it is running other then that it responds fine

And both my servo do it

Are you running a FM radio system or 2.4ghz(Spektrum)?

Am I tried changing the reciver and remote still does it

think i got it was a bad crystal? in the reciever

I always thought crystals either worked or didn't Could be wrong though. If the problem is still there make sure you do not have any metal to metal noise that could be causing glitches.