I'll show You how i replaced damaged rubber whells in Noritsu 120 Carrier.
What You need is: screwdriver, drill driver, sandpaper (I used 180), flat tap washers (I used silicone 3/8"), super glue.
1. Remove shafts with damaged rollers.
2. Put tap washers on shaft. Using drill driver, and sand paper reduce size of tap washers to size You need (10mm).
3. Using super glue stick reduced tap washers in right place on a shaft.
4. Put all together, and You'r done.
Everything works just fine, and cost was about 3$.
Enjoy.
https://youtu.be/aF6YmQNNsyY