Exhaust fire 850 XP

I have a 2014 Sportsman 850 XP has anyone else had problems with grass getting between the muffler and the guard and drying out and catching fire.I had a 2011 850 XP that burned up the fire started at the back I thought it was electrical but now I’m starting to think it was the exhaust. yesterday while riding smoke was seen coming from my exhaust and it turns out to be dried grass.

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