If the silencer kit is the one with the rollers to support the upper chain, stay very far away in corn. On a 7120 we were having problems breaking the bar that carries the strippers for the feederhouse drive sprockets. I was told the silencer kit would help that. The chain carried material around the drive shaft, and the material lodged on the roller shaft. First time in 30+ years we had to call the fire department for a combine fire.