Rough but running

I need help! 2004 Sportsman 700 twin, carb. Starts usually fine, loses power, bogs out, backfires when decelerating.
I’ve changed plugs, air and fuel filter cleaned fuel tank, ran fuel cleaner through system, replaced carb boot, which did have cracks.
Is there anymore ideas I can check before I bring it in.

Rough but running

I need help! 2004 Sportsman 700 twin, carb. Starts usually fine, loses power, bogs out, backfires when decelerating.
I’ve changed plugs, air and fuel filter cleaned fuel tank, ran fuel cleaner through system, replaced carb boot, which did have cracks.
Is there anymore ideas I can check before I bring it in.