My 4.15 Eagle crank was not finished machined for the tip of the input shaft but was machined for the pilot bushing. Motor was assembled, so measured and cut 5/8" (iirc) off the tip of a brand new 18 spline input shaft and still had extra shaft beyond the bushing even with a smaller bevel re-applied. Like in the other thread except now 2300 miles ago. ymmv =)