On my plasma table, I set my Z-axis offset in HOMING/LIMITS.  Because the material I'm cutting flexes differently depending on the location of the table, I'm constantly having to reset my Z-axis offset by a couple hundredths...
Is there a dialog box in machscreen that I can use to type in my z-offset and send the amount to the HOMING/LIMITS settings?  Tool and fixture offsets seem to do no good...?
Thanks!