Maybe, and i’m talking out my butt here, the crank stuffers design on the 562 help to force the air-fuel-oil mixture down in there mo’ better? and keep her lubed up?... but there again, only an engineer or a twisted-wrench banana eating sausage fingered knuckle dragging portin’ primate can say for sure! Ahem....
But I’m thinking Matt would know by now if his bearings were burning up. And I’m also thinking he should run that saw into the ground on 80:1 and only when something fails catastrophic-ly does he need to do a dissection for us. But he’s on the hook for posting photos
Clogged air and fuel filters probably kill more saws these days than 80:1 ams soils... only to be outdone by the stupid stick and straight gassing... chuckle chuckle