How come I find so many little saws with junk piston and cylinders.
Do not forget as the EPA regulations became tighter and tighter on pollution from the saws, the manufactures also started tuning them to the lean side to meet those regulations among other things like strato designed cylinders and intakes and also catalytic convertors.
I have tried modifying now several different cylinders with the strato design with little success.
I have a Poulan 5020 that I ruined the cylinder on and bought another new cylinder and will try again one of these days.