Finally got out there an hour ago. The bearing is good. The bushing is gone.
Gonna order both; pondering whether to do the whole set.
My beam: Nice and greasy. Needle bearing striations. I took a piece of tubing and felt in for the "step" about 5 inches in the tube. Nope.
To double check I pulled Bridget's old beam out of the inky shadows in the corner of the shop and performed the same test. Yep:
I suppose the real scam way might be to fashion a hook and try to fish the original back into place...?
My tendency is to just get the one new bushing and bearing, install, maybe add a set screw to each corner and move along.
Delrin & etc. would seem overkill.
Any expert advice appreciated.