New OEM Piston chipping

[Jimmy in NC]

These are pictures of a new OEM piston in my 5105. I picked up the saw as a $50 non runner, and it looked like it had been "straight gassed" within the first few tanks. The cylinder cleaned up easy enough, but the piston was pretty thrashed, so I decided to go with new OEM.
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Clutch side front.

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Recoil side front.

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Recoil side rear.

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Clutch side rear.

I have only run 6-7 tanks of 40:1 88 Non Ethanol and Shindaiwa Red Armor.

I have lost almost 40psi compression.

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You can clearly see the abrasive effect those little aluminum chips have had on the lower piston surface, and the cylinder shows similar scratching.

Has anyone seen a similar failure?

Jon

Feel free to call me. Talked to an engineer at Mahle for Randy D...same issue for him. I'll be glad to share what he said on the phone.