G Sender and rotary

I have managed to make my own rotary setup on the long mill since the Vortex is out of my price range. I have zeroed all axis for surfacing of my stock. I currently have a 3.5” round stock that I turned on my lathe but want to make sure it’s true with the surfacing tab. Everything works and runs properly but I can’t figure out why my Z axis is starting 1.92 above the stock even if I zero off on the probe or the paper method. Any help would be great .

Sounds like you have zero set to the center of stock in CAM, but you’re zeroing off the surface of your actual stock.

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Yes I’m zeroing off the top of my stock but the only setting im using are the rotary surfacing in the g sender app

Use the center of your stock as zero.