I still don't see how you align the widget exactly with the print nozzle to start with and make sure it lines up with it each time you stick it back on.

I guess you could get the print nozzle to touch the bed and do the same with the widget, but it'll go out of alignment as soon as you change the print head temp, or the magentic strip shifts.

I'm obviously missing something :-)

Currently have 2 printers, both have different levelling procedures.