Negative Switch Offset Troubleshooting

[not-crazyramen]

Not an issue per se but what are some things to troubleshoot when I'm getting a negative switch offset?

I have the probe and the endstop functioning properly and consistently. If I use either by themselves with a manual z offset I have no issues at all, but CALCULATE_SWITCH_OFFSET always gives me the negative offset error.

The probe body is firmly in place and the measured z height is consistent and repeatable.

Forgive me if this is not the right place to ask for help with troubleshooting my setup, but I'm not sure where else to go.