Hey Steve,
I was able to watch your video after having downloaded it.
Okay, you did not say one word that you have a Elite/Masso. If you want help, you should always provide information about the system you are using, the firmware version, and info about accessories and tools you use. Also, please choose the correct category. I changed the category of your posting to "Machines (Elite Series) → Troubleshooting (Elite Series).
It seems you probe an inside corner instead of an outside corner. Please choose the correct settings for use with the XYZ Touch plate, as explained in the Masso Documentation here and follow the instructions here: