I have owned it for about 3 months. It wouldn't shift even on pavement when I first got it. It was screwed all the way in and I knew that wasn't right b/c I have the original papers that came w/ it. I turned it out a little at the time and couldn't ever get it to work. I put new spurs in it about 5 tanks ago b/c a rock caused them to strip but I didn't see anything wrong w/ the tab on 2nd gear at the time. I am mostly thinking it is a tuning issue now. I took it out yesterday on the street in front of my house and ran it straight for about 100ft and it started veering right so I tried to straighten it and it flipped over so I gave up on that way of testing.