Rollers for old SDG20R or SDG30R

A home owner from Simi Valley California says:
These look I like your 81-087 rollers except the wheels ar bigger.All other dimensions match the 81-087 except my wheels measure at 1.25" dia vs 1.5" for the 81-087. Any ideas?
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Tom from SWISCO responded:

Sure, I think we can still help. We won't be able to supply the 81-087 with larger smaller rollers but there are two possible solutions that would render that difference irrelevent.

The first is to install the 81-087 as-is and then adjust it to make up the difference. A 1/4" difference in wheel size isn't a lot and the adjustment of the 81-087 should make up for it.

If that's not good enough, then you can replace the wheels entirely. I would recommend the 81-266 wheel and axle kit. You can drill out the old wheels and install these in their place.

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