I have (I believe it is) a 1995 6x4 Gator. I bought it in 2001. It has always had trouble that the gears grind when trying to shift into forward or reverse. I use the choke to have the engine slow to almost dying to shift into gears. I don't know whether it's the primary or secondary clutch that needs to be adjusted or replaced. I just put new wheels and tires on it (had originals from 1995). I don't have a local John Deere service area to have the clutch adjusted. I have been watching videos on replacing the primary clutch and adjusting the secondary. I don't know which to start with. Also, I've read about an 18 MPH clutch. I'm in very rural Maine and this machine crawls, would like to have a little more speed.