Hey Troy,
Why you can’t probe XY on a V-bit
How to Probe a V-Bit on the Onefinity CNC
Bits compatible with XYZ Probing
Manually Setting X,Y,Z Zero on the Onefinity CNC
Usually it is not possible to probe XY with such large diameter bits, neither with V-bits.
Generally for probing XY, you don’t need to use the bit you intend to use for milling. This applies only to Z probing. You could even use any cylindrical object like a bit that you insert into the collet the other way around. The only important thing on probing XY is that you enter the diameter of whatever you inserted into the collet into the popup window that asks for the diameter during probing.
The diameter is to enter in the units mentioned in the popup window.