Hi, I am new to snowmobiles so sorry if any of these questions are dumb. So I have been trying to get my first sled and I found a 1999 Ski Doo Summit 600 I was wondering what kind of reliability I can expect out of the sled it has just about 3600 miles on it. I plan on riding on some trails and powder. If I looked at the sled what should I look for? red flags or anything that I should be worried about if I saw it on the sled. From the pictures it looks really good It doesn't appear to have any cracked plastics and the engine looks pretty clean.