The side arms and block on mine were like new, Maybe one thou wear. As with anything if there is no lubrication there will be friction and the resulting wear.Weldo this is a brilliant thread. Thanks for sharing. I am busy in the midst of my shaper rebuild and have consulted your thread numerous times.
Just one question I have is with your side oil port mods on the sliding block, does it not tend to drain the slot reservoir on top a lot faster to the detriment of the main bush its supposed to lubricate?
My arm sides and block are scored so this is obviously a weakness on these machines and I considering doing the same mods you did.