I'm not that experienced with magnets and I don't have those fitting morphs, however did you try changing parameters first and then magnetizing?  Do the magnets have a control of some sort (prop or whatnot) that you have to manually tweak?

WARK!

Thus Spoketh Winterclaw: a blog about a Winterclaw who speaks from time to time.

 

(using Poser Pro 2014 SR3, on 64 bit Win 7, poser units are inches.)