Pryor to the modification I made to the pivot door roller I had reached out to MorRyde for information.
I have since gotten a reply that there is an updated roller assembly. They sent me one at no cost and it does appear to be an improvement that I think may hold up over time. Their rep, Jennifer, was very prompt, knowledgeable and courteous.
New roller arrived today.
SP205-517 (roller space plate)
UO136-2074 (sliding door roller)
The roller now fits into a pocket in the mounting plate, locks in and pivots quite easily. Theirs freely pivots in the bracket where as mine pivots freely in the roller. I think both achieve the same thing.
I will keep this as a spare and if my mod does not hold up I will change them out.