The first thing we used to do when we bought a new saw was gut the muffler. I tried wearing muffs a couple times, but the chipper ate them, so I gave up. When I took a hearing test, many years ago, the Doc said my hearing in my right ear was way worse than my left, and that was not common. I told him it was from shooting Hi Power competition without ear muffs. He said no, when you shoot right handed your left ear gets the muzzle blast, and your right ear is protected by your shoulder. Then he asked if I was a pilot? That my hearing loss fell in the parameters of a pilot flying single engine prop planes. I said no, how about feeding high pitched drum chippers with my right ear next to the drum, and running chainsaws with gutted muff's on my right side? He said, yep, that will do it. Just think of all the cool stuff I could buy with the $7000 I spent on the hearing aids. Actually, it was a little less, my insurance covered $3000.