I'm at the point in the manual of Printer Commissioning. I'm following the "Zero X & Y" instructions but I keep arriving back to the same point. My X is out by about 20mm from the zero line on the edge of the bed. I run "Auto Home" then I Prepare -> Move Axis -> Move 1mm -> Move X, and move it to the 0 line on the bed. I then move the X away and tighten the X end stop screw a few turns. I run "Auto Home" it touches the X and Y stops but yet it goes back to exactly the same place before I touched the screw, and it still reads X: 175, when the zero is at -20. So X should really read X: 195. What am I doing wrong here? I can't see where the build manual tells me to do anything else... Am I meant to "set home offsets" or something else?