Are these good machines? I'm gonna probably be buying my neighbors soon and I wanted to know what problems I might expect out of it. It only has 995 miles on it!!! I've heard the clutches on these doo's kinda suck. What about the reverse, is it reliable? Its been sitting for 2-3 years but started up yesterday after about 10-15 pulls. What should I go through before running it and what oil can I use besides ski-doo oil. Anything else I should know? Thanks for any input!!