Progress, several cycles of increasing shaft deflection has brought the outta roundedness from .038 to .010,
I'm doing another cycle now at .235 deflection, then I'll check, measure, rinse and repeat in an hour as needed.
The Hull Truth forum folks replied to my post there with two values (.007, .002).
.002 measured at the center of the shaft came from the Yamama manual, since I'm avoiding pulling the shaft I'll be mighty pleased if I can get to .004 at the outer edge of the shaft, mighty pleased indeed.
