Like I said, it is not that bad. You can see the scuff marks on the piston alright but not on the liner much unless you really look for them. This scuffing happened over a month of non-use at my instructor's place when I was not not flying after a crash. This engine was just sitting in his box of engines. But the engine still ran ok after that for about 3-4 months.

By the way, you cant see the exhaust porting in the photo of the pison side because the liner isint there. I removed the liner for inspection and didnt put it back yet. Will do that after thorough lubrication.

I am thinking I will run the engine regardless. I am including a pic of the bearings here. Didnt take them apart, just looking from the backplate side. Loaded them as from the camera. I couldnt get the o-rings off because the carb screws do not turn, the head is not engaging. So I dont want to use the crockpot/ boiling in soap water method if possible. If the clean-up is good enough, I will simply re-assemble and let the new synthetic fuel clean up the engine?

Ameyam