I think either 81-018 or 81-149 would be a replcacement based upon measurements, but wanted to confirm prior to ordering.
Bob from SWISCO responded:
March 9, 2021
It looks like your original roller lacks a face adjustment screw. I think the 81-156SS is closer to what you need. Compare the dimensions to be sure and let us know what you think.
A handy person from Jekyll Island, Georgia says:
March 10, 2021
Bob,
Thanks for the reply. You are correct ! The one I ordered did not have the Face Screw Adjuster. I've requested a return and have ordered four replacements of the one you suggested.