I was troubleshooting a bog the last couple weeks on my 04 POL 700 RMK and I thought it had to do with the jetting not being correct after adding exhaust and intake items. I followed the jetting specs from the parts manufacturer (SLP) and I still couldn't figure out the bog. Well it turned out to be a combination of not having my exhaust valves open as well as having a warn belt so that it sat too low in the secondary and messing with the engagement. I just wanted to emphasize the importance of having a belt that isn't too warn and glazed as well as clean clutches as mentioned in XC's first clutching post (http://www.thumperta...ad.php?t=860841). Opening the exhaust valves helped but not as much as a new and quality belt. Now get out and ride your sled!!

Yep... Another thing with belts... wash them first.  I run mine through the sink with some dish soap to get all the mold release off them before I install them on the sled.

If you burn a belt but it's still usable, sometimes a scotchbrite pad can take off some of the glazed rubber and bring it back to life.