hi i have a 2007 Polaris sportsman 500. it was running fine, went riding about a month ago and no issues. about A week ago i took it out rode about 100 feet to my neighbors house and when i got off it puttered then staled out and died, hasn't started since. it is getting fuel, has a new fuel pump new fuel filter, and lines are cleaned. i checked the compression it was at about 85-90. the only thing i did that day was top off the gas before i rode it before it died. i checked valves and adjusted them. now im at a blank of what to do? Any advance will help thanks you.