Just clean the cylinder up a little, and buy a "Like sized" $39 piston off watsonr... You'd be surprised what condition you can get away with on a jug. Especially when you throw a fresh piston and rings in there... These 2 strokes just ain't that fragile...
There are chunks of plating missing. When I was cleaning the aluminum transfer off I found it, bubbled like crazy. Deep holes, above the exhaust port.
I have more saws, and actually still have one pristine 600p NIB, but sorta hanging onto that one, either emergency money if I need to sell something, or emergency backup one saw plan,if I need to sell off all my other saws at once, one or the other. Got both for a deal at the same time, guy was gonna go in the firewood biz, but then got a job offer out to texas and was selling off everything he had to move there, yardsale was nice, house for sale, appliances, furniture, goldwing, you name it, everything was going except his truck and clothes and mechanic tools. Got the saws, but missed a bucket of chains for cheap, guy ahead of me got those, but the seller held onto the saws until I got there as I said I would take both if he discounted them, which he did.
For now, Husky 365 and various countervibe poulans and a coupla home renter class clamshell stihls are doing my midrange size saw work right now.
I am sorta glad I waited on popping for the jug and slug now, as I would rather wait some more and do a full 620 upgrade, which I think should be possible. Kyle might chime in and say yea or nay on that.