Voltage regulator? Computer problem? I am new to the site. I live in NW Wyoming, and just bought a new (2010) Polaris RMK 800 155. It had zero miles on it, and would not idle long enough to climb on the trailer. Two days later, a mechanic checked it briefly and it cranked and idled. I loaded it and took it for it's first ride, on a trail. It exhiblted power surges for 5 miles. At the first play area, it quit. Could not crank it. After 10 minutes, it cranked, power surged for 2 - 3 minutes, began backfiring through the exhaust, and quit. It had to be towed out. It may have 6 miles on it. Any ideas?