a quick appendix with a couple of thoughts.....
1. if the motor bearings are dry but not showing signs of corrosion, the side shields can be carefully pried off and the bearings cleaned, re-greased and the shields put back on..... you don't have to go too mad with the grease, too much and the steering will feel like treacle. bearing in mind the motor only spins 20 times lock to lock, it's not like its doing 6000rpm for days on end.
2. the ball screw yoke bushes.... i'm guessing they are a micro shock damper with a bit of give in them. so in theory you could use some of the 2 part liquid rubber to restore them, the sort that boy racers use to stiffen engine void bushes and the like, or make replacements for obsolete engine mounts.... they are available in different hardness levels, but not idea what they should be for the secret bush in the steering rack!!
probably shore a70 or 80, but just guessing, something like this, a liquid rubber https://www.mbfg.co.uk/pt-flex-85-rubber.html or polyurethane https://www.mbfg.co.uk/duroflex-85.html but more investigation would be required!
aka Jonathan!!
'92 charlotte green auto.... as a daily
'37 Ford Y street rod......... something for the weekend!
...... if a photobucket pic is foggy, click it, and it'll take you to the clear version, yes, it's a clicking faff....