Fastgrass, I would prefer to avoid the process you have suggested. The ball bearing is very, very hard, and pushing against it will do horrible damage to the point on the end of the puller screw. Engines come and go, but tools last a lifetime if you treat them properly. If there is a centering recess in the end of the crankshaft, this fits the point on the puller screw and there should be no damage to either part. If there is no centering recess, just a plain flat end of the shaft, I prefer to use something along the lines of a piece of mild steel, with a drilled recess in it, between the puller and the crankshaft. If there is a tapped hole in the end of the crankshaft, I use a screw with a drilled recess in the head. Bottom the screw in the crankshaft, so there can be no damage to the crankshaft thread.
