Spark Arrestor bolt won’t come out.

The spark arrestor bolt on the underside of the muffler on my 2014 Rancher will not come out for anything. I don’t have a torch so I didn’t try that but I’ve tried pretty much every thing else.

I’m about to hit 100 miles and wanted to clean it out. Any suggestions on getting the bolt out? I’m going to have to get a new one since I’ve chewed this one up pretty good.

Wayne