Hi All, Sharing issue I had with Wilson TS with: arduino mega 2560 Ramps 1.4 TMC2130 w/ 1/16 microsteps M5 threaded rod (i.e. 4000 st/mm) octoprint Cura Issue was z height was 85% of height when printed via octoprint and cura. Recalibrating z was not effective setting the z max speed to 1mm/sec solved my problem. Believe the cause to be ramps dropping z steps due to increased USB overhead lby learz - Printing