When using the bitzero v2 I roughly center the 1/4" blank in the hole of bitzero.
Attach the magnetic-ended ground lead to the collet.
Move the bitzero to make contact with the blank and verify the signal.
Select Begin Probe.
When the probe reaches the edge of the circle it nudges the bitzero and introduces an error if not held in place (sometimes one may forget that detail).
This could be easily remedied by probing the outside edges as shown in this video.
The canned macro used for probing should be a easy change I would think.
The C3D guys would have to answer that.
Personally I find it faster. There were also a couple of times where I was very close to the C limit on the left side. My board and the BitZero would fit but the distance it would travel to the left before coming back to the device would hit the limit and cause missed steps so I would have to re-initialize.