This are the parts needed to do @WhereWaldo's upgrade to the bronze bushing with 10mm Smooth Rods. The pillow block was slightly modified so that the center hole can clear a 10mm rod. The bronze bushings sourced from the original product has the exact same size specs for either the 8mm rod or the 10mm rod. This means the outside mounting hole does not need modification. The endcaps are slightly modified to use 10mm rods and to have a bit more material added to support the extra size.
This is just a quick post for now to allow some of our forum members to try this upgrade if they want. I have not printed or assembled this upgrade yet myself.
I ordered the 10mm rods from ultibots.com. They are a bit long and will just need to be cut to length. The stock rods are 354-355mm. They are good quality and the sale price is better than others I found elsewhere.
10mm Bronze Bearings: