I got my Xp running but it wont stay running.I went bavck and redid all the stuff you guys said and it started right up.When I start it up i have to hold the brake or it takes off on me.It sounds like it keeps building up speed the longer it runs and once I release the brake it shuts off.I also have to prime it everytime for it to start. So I took video of it to maybe help to see if anyone can see whats wrong with.The first video is of the car running and the second video is of the throttle working.I beleave the problem is in the throttle somewhere but im not sure.

http://www.youtube.com/watch?v=nDrPolUBv90

http://www.youtube.com/watch?v=GHZaJUJjCOk