@mpirringer I do have a machinist 1-2-3 blocks and Mitutoyo calipers I worked at a machine shop for many years in composites, I TRULY appreciate you taking the time to explain that it may help others on here as well , I have already leveled the X-axis about a month ago, it was almost perfect but I made it even to the 3rd decimal place in inches lol. I do know about the WD-40 I've been explaining the same thing to people for years. I have Starret Oil and Super Lube with PTFE I use on things on my desk. I will add one drop of oil while it's probing the bed leveling to see if that helps at all. When running the Z-Axis up and down 150mm each time it sounds smooth and it doesn't make the rough sound.
I'm posting a link of all Axis moving 100mm back and forth, while not probing the Z sounds the best. It's only 3 months old, I have about maybe 30 prints on it and keep a fairly large HEPA filter in the room to help with dust. (https://youtu.be/GWdd8-sK6qo)
I'm doing most of my prints now on a used from craigslist Mono Select Plus, I only added a Mirco swiss nozzle and Micro Swiss heating block, I added BL Touch and Flashed ADVi3++ and changed the extruder teeth/gear. I only got into printing last year. Now this bed had about 20-30 spots where person drove the nozzle into the bed, Also leveled the X-Axis on that. Now my problem is why is the used one from craigslist more smoother running on all Axis than my $1000 3 month old one. Could it just be bad bearing's all around on the pulse?
Sorry in advance if my grammar is poorly written that is my weak point.