My verticle shaft in the lower geracase splines striped. So I got a used shaft and new bearings. The shim tool says that I don't need a shim. Is this ok to not have a shim? And what should the resistance of turning the shaft be with the pinion gear on, the retaining plate bolted down and the swivel bearing not over the shaft. Should it turn freely without any oil in the gearcase, and the pinion gear turning the clutches on the prop shaft? I would appreciate it if someone has had some experience with these things. 