The first thing you gotta do, before any assembly, is to thoroughly check everything out for the proper clearance and alignment. We started with the flywheels. We jigged them up in the truing stand and found them to well under the 0.002 inch runout.

In fact, the gauges didn’t seem to move at all.

The pinion shaft bearing race (above) and shaft (below) were both damned near as perfect as you could get.