Z axis on crossfire pro sticks

Just wondering if anyone has any ideas is to why my Z axis on crossfire pro sticks when moving up or down?

Coupler slipping?

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Slipping or the leadscrew is dirty/gunked up and catching. Same can be said for the rods that the eccentric bearings ride on.

I have a tooth brush dedicated to cleaning off the lead screw and I have a habit of always jogging my Z axis up and down before running any cut to ensure it’s working well before use.

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Thanks I checked that out, but everything was tight. Cleaned up everything and that seems to be working now.

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I cleaned up things and that seems to be working now. Thanks

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