Thanks, Barry. I finally worked through this problem. Turns out a reload isn’t enough! The most reliable, and quickest, way I found to get updated master_gdl user-global values to update was to open Library Manager, duplicate the existing master_gdl script, the delete the old one. After that 3d windows would reflect the new values right away. I had tried reloading first, and that wouldn’t do it, even with a manual rebuild-from-model action.