Thanks for all the tips and pointers. We got'er done last night so we could ride today. Things went pretty straight forward. The 1 3/4" track would not clear though, we removed the angled piece and still couldn't get the drive shaft in with the big lugs. We ended up doing the ridiculous task of trimming each lug with a skil saw down to 1 1/2". It was a free track so it was going in one way or another. Only slight hang ups came from some slight buggering up of the spline on the drive shaft during installation which had to be filed to get the gears back on. Getting the bearing all seated on the clutch side was a pain too. The snap ring wasn't too bad once I figured out to rotate it so the holes were on the top side of the shaft, then I could use a set of 90 degree snap ring tools and she came out easy. The sled did decent in the powder today, I mean it actually was able to be ridden through 3-4ft of powder. I was really surprised. The suspension might need some more help and it would have been nice to have the full 1 3/4" track. For now we need to get the clutch engagement down. It engages at 4500 RPM I'd like it down to 3500 RPM, how does a guy do this on a ski doo? Is that a primary spring like on my cat?