Hey Doconefall,
when I watch your videos, I think this is exactly why I want to replace the entire Z assembly with something with less leverage force between end of the bit and the spindle mount. With its Z travel, the spindle mount is unable to protrude downward beyond the end of the Z rails, this is how it differs strongly from all other CNCs I know. I’ve planned to replace the Z assembly even before I bought the machine, the Z assembly is the weak spot of these machines. It’s the design issue I described here.