Originally Posted by Magnetoman
Another subtle alignment issue that also needs to be checked is if the shafts at each end are coaxial with each other. .... The operational consequences of this {shaft misalignment} would be that it would misalign the bearing races (causing premature wear) ....
Agreed.

Originally Posted by Magnetoman
.... as well as the points block (causing the rubbing block to wander in and out on the cam as it rotated).
Why would the rubbing block wander in and out? (apart of course from the effect of the cam.)