039 scored piston on intake

[Jza]

*update* turns out a circlip decided to come out and trash the saw . Nevermind , old saw . New piston assembly is nearly here !

 

[Jza]

Another update.. Installed new p/c . Have done about 12 tanks , broken in and running good!

Opened up the muffler which seem to help too

 

[cookies]

Another update.. Installed new p/c . Have done about 12 tanks , broken in and running good!

Opened up the muffler which seem to help too

The muffler exit is super restricted on those models, I fully open up the exhaust exit to match the little cover. Glad you got it running great again