Summary

I bought the following pull out trashcan retainer. It works great except the trashcans are not held firmly in place so they move around when you open the cabinet.

Rev-A-Shelf - 53WC-1835SCDM-212 Pull-Out Waste Container with Soft-Close Slides

https://www.amazon.com/gp/product/B00VI795EQ

I designed this Thing which attaches to the side rails and holds the cans in place so they aren't moving around. I printed the brackets in PLA and used a 1/4" #6 screw with a washer to attach to the Rev-A-Shelf pull out rails. Four brackets are needed. No supports are needed for printing and you should print it in the orientation of the design file.