What's an overbored chamber? Are you talking lengthened, long taper cones, Mark? If so, how does any boring tool or reamer produce marks of any sort where it isn't cutting? Are/were all chambers reamed with a fluted reamer? Seems to me reamers produce "chatter" indents which are parallel to the bore; boring tools produce radial striations. This ventilated Baker has radial; exactly what type of cutting action produced them? Where are the aerospace machinists when you need em? Damn good pictures, Randy. Glad Glenn wasn't hurt.
jack
