I went to summerize my 1998 Polaris XC 600 and when I started it up it would seem to load up on fuel and other times it would seem to not have enough in the cylinders. Eventually it would die. I started it up again and eventually it did the samething. Also, sometimes after the sled was up to N.O.T when I would press the throttle and it would seem to bog out. I know this particular sled model has its issues. Im trying to fix this before next winter so it will run better. Any suggestions?