Backstory: My Ender 3 V2 hotend nuked itself (clogged in the heat break area) so replaced the whole thing with a Micro Swiss Direct Drive.
Long story short, I ended up adding CR Touch as well as I was getting horrible blobbing that seems to cause layer shift. The reason why is because the MS nozzle for whatever reason seems to get a ton of build up that accumulates then drops off onto the print, hardens and knocks the nozzle as it passes, causing shift. Interestingly, I have only ever seen this in the Y axis direction.
I went through the whole machine yesterday and tightened anything lose. There were some loose eccentric nuts, and some other nuts that shouldn't have been loose on the wheels. I made sure carriage was OK and belts are good.
I am trying to print out the dual Z belt system mounts with the top mounted motor so I can ditch the lead screw. I am still getting layer shift which I ASSUME, is from blobbing, but cant prove it as I was out.
Now, I do have the 4.2.2 board which apparently is known to cause layer shift if the fan isn't running, but I do indeed have it running so it isn't that I believe.
This is driving me nuts. It is still layer shifting.
Yes, calibrated e steps. Flow seems ok, i reduced to 94%
Is there a flow calibration test?