Rick, this will break your heart. When I got out of the woodcutting game, I gave them both (I had two) to my brother. He, against my advice "tuned" them and blew them both up in a month.:mad:
I see if he still has them though. If you can get a barrel and piston, you would certainly upset a couple of stihl 90 owners :twisted:
I'll find out.
Tom.

