Have owned the same type M8 before and this one has just under 700 miles. The dragon has around 2500 on the chassis with a new Polaris long block with the fix kit. A little gun shy on the diamond drive, my last 07 went through 3. Will be hard to go back to the older stuff, my last 2 sleds were a 11 pro and then a 12 summit with the tmotion. The last few winters here have been terrible and just don't want to spend the huge money and not be able to use it. I know the dragons had the motor problems and I seem to remember maybe voltage regulators also. Don't really know much more about them. So how about some insight from those in the know...