8mm Y axis conversion for Flyingbear P902 3D printer

I made these corner mounts for 688ZZ miniature ball bearings in order to make a more solid Y axis with 8mm shafts. I had a lot of problems with bent shafts when I had the original 6mm ones, I tried purchasing others from 2 different places and I only got bent ones. This mount loses about 8mm from print height but I am OK with that. I changed the stepper motor with 4.2Kgf up from the original 2.2Kgf and I purchased the following parts:

4x ball bearings 688ZZ from ebay any seller (not flanged)