I have a very mechanicly sound stihl 011AVT. Its kinda like a top handle/rear handle mix. It blows 150psi clean piston and cyl. No mods atall. New OEM throttle cable semi recent oem filter carb oem carb full carb kit, oem fuel line/filter, oem seals about 1 year ago. Passed vac/pressure test at that time. Original stihl 14in bar stihl semi chisle chain. Set up for lp 3/8 .050. Very reliable fairly good shape saw i think. Lmk if you are atall interested and i will grab pics.