Poser creates FBM-linked Custom_Morph dials in all body parts (possibly parented props, too...?) on a figure when the Morph Brush is used on any body part (possibly parented props, too...?), in recent versions.  This auto-spawning of the FBM can lead to some Custom_Morph settings confusion, particularly when one or more actors on the affected figure has pre-existing a Custom_Morph dial created in an older version.  I've encountered Custom_Morph dials unexpectedly being activated or deactivated or having their settings doubled, which can lead to come confusion.  :lol:  I am, of course, easily confused....  :unsure:

I've found it best to do as icprncss2 suggests, and spawn a new morph target when I use the Morph Brush.  The Morph Brush tool palette should include a button to spawn a new morph from Custom_Morph, which will IIRC create a full FBM on the figure if used.

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.