As with most my stuff I like the ability to have some tolerance adjustment built in, we aint all buying Prusa Printers so most are not quite exact lol. This will help you get your Z rods steadied. I did not end up putting the bearings in as i found it made things not quite right with the motor mounts i have, but with just the rods in there its still great with lined up then tightened down.

THIS IS A REMIX - I dont know this much design yet lol. ORG LINK https://www.thingiverse.com/thing:3504112