Looking for replacement roller assembly

A quick learner from Joshua Tree, CA says:
The wheels on the roller assembly for my mirrored closet door are needing to be replaced. Where might I find a replacement roller assembly or can I just replace the wheels?
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Tom from SWISCO responded:

Thank you for your patience during this busy season. Your roller looks very similar to our 81-139. Look it over and let me know if you agree!

A quick learner from Joshua Tree, CA says:
I have tried that already and the T on the end doesn't fit into the door base. The T on the piece I am trying to replace only measures 3/8" across. I believe the T on yours measures 6/8" across. My door can only accommodate the T being 3/8" across. Would you have other product suggestions or other suggestions in general by chance?
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Tom from SWISCO responded:

Ah, I see. That would be a problem. Unfortunately, we don't have a version of this roller with a smaller "T." Would you be able to trim ours to fit? You could theoretically snip the ends of the "T" to size. Just keep in mind that hardware altered in such a way cannot be returned for a refund.

A quick learner from Joshua Tree, CA says:
I will try that. Thank you.
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