So 0.1" out of focus has no effect then? I don’t understand how that can be the case when support are constantly telling people PG has to be absolutely flat to cut properly with PG settings.
As Scott said that was just part of a discussion and was built from incorrect data. This is what the motor actually does.

It does nothing at all between 0.4" and 0.5", so it has a range of 0.4" where it can focus.