Help sent /z22 in grbl now z is off

I put /z 22 in grble in the midi and hit send thinking that would move z to 22 so I could measure for setup. Now when I click move .1" it moves around .2". What did I do and how do I fix it?
Thank you.

I suspect that you altered the setting for # of steps / mm for $102.

If you have a Shapeoko, try sending

$102=40

(also see: http://docs.carbide3d.com/software-faq/shapeoko-3-default-grbl-settings/ )

— if you have a Nomad (I think this is the same for a Classic or a Pro),

$102=200.000

If that doesn’t work, contact support@carbide3d.com

For the record, to manually move, first check to see if you’re in Imperial or Metric mode (G20 or G21) and then send for rapid (in metric):

G0 Z22

or at 10 inches / min.(in Imperial):

G1 Z0.86614173 F10

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Thank you. That helped me find what I was looking for. And I have reset the grbl. So now to levelling the bed.