My sled has been idleing at 4000-4500 rpm`s i think this is kind of weird. But when i start it and let it run without giving it gas it idles around 2000. But then i rev it up a little bit and it starts idleing at 4000. And my clutch engages at about 5500 or 6000. What is it supposed to be and how do i fix it? Thanks.