Next, the upper half of the rear main seal was installed and lubed. Theseal's lip faces inward to the crankcase. The crankshaft is carefullylowered in place, as the studs can easily score a journal. With the capson and torqued, spin the crank to confirm it rotates smoothly. To setthe thrust bearing, slack the center main cap bolts and run them in tojust seated. Then, using a block of wood and a heavy mallet, strike thecrank at the rear flange with a heavy blow and re-torque the center cap.Check that the endplay is within specs. If not, the studs may bepreventing the cap from floating to position, and may require the cap'sfastener holes be enlarged slightly. Confirm by checking the endplaywith the center cap removed. Ours went together with no problem, and nomods required.