use a ruler...
eg X_MIN_POS -45
so from the X min position to the 0 position is 45 mm. Measure what it should be to the PrintBite 0 and replace 45 with that value.. leave the -, it means to the left of 0
repeat for Y
NB you also need to update your slicer with the correct bed dimensions
eg X_MIN_POS -45
so from the X min position to the 0 position is 45 mm. Measure what it should be to the PrintBite 0 and replace 45 with that value.. leave the -, it means to the left of 0
repeat for Y
NB you also need to update your slicer with the correct bed dimensions