In all the years I have used the Redfield Jr style mounts I have never found the need to use the windage adjustment in the rear base. I make sure it is centered and never had a problem.
Those mounts were designed in the late 1930s for scopes that either had no interanal adjustments at all (shim the base for elevation) or limtied adjustments that could not conpensate for the barrel or mount missalignments of the era
Any internally adjustable scope made from about 1960 onward (Weaver, Redfield ,Leupold, etc) ,should have plenty of adjustment in it.
One thing that CAN cause stress on the scope tube is
using the scope tube as the "wrench" to initially install the front windage ring in the mount base (use a dowel)
The second thing that can stress the scooe tube is an unevenly matched height on the two peice bases .
Many times, the rear base top is a smidge higher or lower that it needs to be to perfectly match the bottom of the rear ring
