I recently bought a 2008 teryx 750LE with 600 miles and 47 hours on it. It's bone stock. I live at 1900' elevation in Arizona and it seems to operate properly besides a little sputter at the top end. Last weekend we went to Williams AZ at approx 7,000' elevation. My Teryx sputtered in the mid range and actually died while driving it at 5-10 mph. After letting it sit for 10+ minutes it started and was drivable again but only for another 5 minutes then it died out again. When it dies it it mimics like its running out of gas. This happened three times. My wife freaked out and finally had it towed back to our campsite. It had fresh gas in it, I checked the plugs and they looked fine but I replaced them anyway. Any troubleshooting help, suggestions or your experience with your Teryx at high altitude would be greatly appreciated! I really like the Teryx and want to be able to use it at home 30% and at altitude 70%. Thanks!