I just bought 2 used skis, a 97 and a 99 XP. Both needed starters that I have since installed. Right now I am working on the 97. It is an 800 motor and had the grey fuel lines. I replaced the lines with fresh fuel hose and attempted to start it. It cranked and almost started but wouldn't turn over. I pulled off the carbs and am in the process of rebuilding them. Is there anything else I should look for as a common issue with these skis?