Good reminder!! ThanksNope it’s not smooth. I took my muffler off to inspect and thought I had everything tight. I did not re lock tite . The bolts back out and I cracked the mounting holes in the muffler in a tank. Oh and I found one internal bolt missing.
When I last milled and the saw decided not to cooperate, I too looked at the piston. Did not re lock tite the muffler bolts. Will take a look. Vibration master that g660 is!! Put on the dogs for bucking the other day. Tightened the bolts very well. After few hours one of the dogs fell off😜