8 3/4 ? green bearings or not

the tapered chrysler roller greasable bearings are better than the green sealed ball bearings, especially in a non straight line only car. If U have stock roller bearings why no adjuster? my spool is not splined all the way thru, but is hollow, so U could use a piece of axle as a spacer-BUT it needs to be of a precise length to give the axle bearings .005" - .015" play! (without an adjuster)