Chief,
AJ's pictures look far worse then my motor when it came apart. My front cylinder, piston and head looked like a normal properly running engine should. Nice tan color on the piston, head chamber and spark plug. My rear cylinder had heavy carbon build up on the cylinder fire ring, piston, spark plug and head. My rear piston rings were shot - my front piston rings were normal. As bad as my rear cylinder components looked, they were nothing as compared to AJ's. I am not suggesting where the oil came from in AJ's pictures, but IMO, AJ's components show more then carbon buildup. Maybe his valve guides are shot from 19K of spring retainers hitting the rocker boxes? Or maybe his rings are shot? But his pictures indicate more then carbon buildup from a poorly designed combustion chamber, ect. IMO, oil is finding its way into the combustion chamber from somewhere...
Scott