Got the gator back today 167 dollars with a slip, without 150 dollars. They shimmed the injectors, turned the pump up and made a intake mod. Looks like the had the intake off. 4 hours labor. To my findings they do all worked for my local john deere dealer, so they said they wont tell if I don't with the warranty but its almost over any how. Runs great, I live in the hills, there is only up hill and down hill. The xuv will go 30 mph up hill now. It does trail a little gray smoke when pullin hard but not all the time. There is no different drivabilty difference I can see other than that. Don't get me wrong the gator seemed like it would pull a brick school house over before but traveling up a township road to get to next pasture it would lose speed going up hill. I highly recommend this to people that have this trouble. They also said that these engines are cut way back for emissions. I didn't notice that it used any more fuel today but I am sure it will. My wife notice the difference. I am really pleased. The xuv does the same top speed which is fine for me. THAT IS MY FINDINGS hope it help someone out there.