Ok so the issue is this the truck just won't stay straight I have the trim and everything set well and shortend the end points so it isn't so quick to respond I also changed the steering curve so it's not so fast. It will go straight if I just gently use the throttle but the second I give it any ammount of power the back end breaks free and just starts blowing doughnuts. I can only have it going about 8 mph before this happens. When I look at the truck the back wheels are canted in towards the buggy chassis (toe in I think it's called). I checked the parts and all of them are good so I'm guessing this toe in is normal. This is the old rustler with the .15 in it. I have street tires on it and have been running it on the pavement thanks for your suggestions Jared