I recently upgraded my hot end to the Micro-Swiss all metal hot end. After installing it, I zeroed out the bed. Everything seemed fine until I tried to take ABL measurements. On the fourth measurement, the head crashed into the bed and tried to continue in the -Z direction causing a terrible grinding sound. It even does this at the beginning of a print. Has anyone had this issue before? If so what was your fix?

Creality CR-10S Pro (V1)
firmware: 1.70.1