Right now AbstractXAxesFactory exposes Anchor, FixedY and StepSize, since these need to be able to be set from XAML (hence a default constructor needs to be present).
This seems to work, but they can not be changed at runtime as this would break the underlying AbstractAxesLabelFactory logic.
These should probably be turned into dependency properties, and a way to reinitialize the underlying abstract class needs to be implemented upon property changes.