I have a 95 Indy 440 that is giving me some problems. What happens is when the sled is being driven at slow speeds it seems to jump forward. It feels like the track is catching and then slipping. I have checked the track and it seems to be tight enough. I also looked at the wheels that drive the track (not sure what these are called) they seem to be all there and not missing any notches. This happened last year when I got stuck in a ditch and a rock was wedged inside the track towards the front. I put a newer track with only 500 miles on it and picks in it this year. At that time nothing looked bent or broken. Does any one have any ideas what to look at or where to start to fix this problem? Could the track be to loose or tight? How would you tell if it was? Any help will be appreciated.