Hi there looking for some opinions here. I have a 98 sportsman 500 I think I'm having carb issues. I rebuilt top end 3 months ago and ran good through break in it smelt like it was on the rich side. I just recently put new jets and new needle and seat in because after it warms up the low end gets boggy then clears up with higher rpm. The air screw is at 3 turns out also. The dealership said to put jets and needle and seat in and it should be fixed but it is still running the same they also said it's not the can .Anyone else have any ideas?