Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5277843. This is a super quick, super low filament usage Test Print which you can/should use to dial in and adjust the corners for perfect leveling. My recommended steps: 1) measure the x-axis gantry on both sides (since it is dual-z steppers) to ensure it is perfectly level to the frame. Disable the steppers and adjust as necessary. 2) manually level with a piece of paper on all 4 corners, then auto-level (if you have a CRTouch/BLTouch) and save to eeprom. 3) use the attached .STL file (super quick, super low filament usage) to run a test print and adjust the corners as necessary during it. 4) use the 'Tune | Babystep Z" as necessary when printing the skirt to ensure that you are getting good 'squish'