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Vertical Wobble in Z Axis

I am having issues with cut depth across the cutting area. At the end of a carve the bit ends up dragging across the work as it goes to home. I am wondering if the wobble / play as shown in this video could have something to do with it. Is there a way to remove this wobble? Thanks!!

z wobble cnc|video

The Eccentric Nuts are positioned such that the V Wheels are not as close to the rail as they should be…

Eccentric Nuts See what they are: Eccentric Spacer | Inventables

X Axis: X-Carve Instructions: Adjustable V-Wheels
Y Axis: X-Carve Instructions: Adjustable V-Wheels
Z Axis: X-Carve Instructions: Adjustable V-Wheels

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Thank you Seth! It totally worked and I just spent the last 3 hours cleaning up my cnc. Appreciate you taking the time to instruct.

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