Replacement Whirlpool Microwave Tray Support

I lost my tray support before even installing my Whirlpool wml55011hs microwave/range hood. This replacement uses 605 glass ball nylon cage bearings 5 X 14 X 5. They simply snap onto the tray support bearing posts. The bearings are 14mm in diameter. The tray support needs wheels that are 17mm. Included with the design are “tires” that snap onto the bearings to increase their size. The original tray has three wheels. Mine has 5 (that's how many came in the package.) It should provide better support for off center loads. I used ABS but I think PETG would work as well. I have included a Fusion 360 file. The design should be easily adaptable to other microwave ovens.