A morph just stores changes to the mesh, so if you want to leave the ears alone do just that - leave them alone. When you apply multiple morphs their effects are added, so having a morph that makes no change to the ears will not interfere with those morphs that do affect the ears. If you are seeing more effect than you expect when a morph is set to 1 then that sounds as if you were working on a shape that was already morphed itself - so your morph is adding an extra level of transformation that you were not expecting. You need to make sure that you are working on an zeroed OBJ - no morphs, not poses. The head scaling effect can be caused if there are two morph libraries - such as the RuntimeLibraries!DAZFigure name folder - on your system.