Hi @preinheimer, the approach of using a routers adjustment will not get you to a decent Z-axis move without modification. I have seen this router from Canadian Maslowians, but till date no fix for a backlash or similar. Perhaps you what to look into a c-beam (needs to be a strong one by looking on the size of the router), or the https://forums.maslowcnc.com/t/the-meticulous-z-axis/
Kind regards, Gero