The cylinder actually looks like a piece of the surface flaked off at the bottom of the exhaust port. Piston was scored badly, but rings were still loose.
So digging through my spare parts, I found this. Looks like the right kit, also have a whole new carb. Also crank seals p/n 9640-003-1600 and 9640-003-1190, think the 1600 are the correct one's for an 028.