I have a 11 Sportsman 800 and it was flashing hot after about 5-10 minutes of running. I thought it maybe a clogged up radiator due to riding it in the mud pits a while back. So I disassembled the atv and cleaned out the radiator and that wasnt the problem. The fans would kick on and you could touch the radiator and it would be cold. So I figured it maybe the thermostat. I think they are useless so I want to bypass it like Ive done on my cars in the past. Is there any reason in particular this would hurt my atv if I did. And Im also concerned cause there seems to be a knock coming from the motor now but there is no smoke or power loss. I havent even driven it 15 minutes since it started doing this. Any thoughts?