ZBrushCentral

posable symmetry question

i test many times with original standard zbrush primitives.
For example 3d arrow, sphere…
And made many symetric zsphere model again…

Deformation Smart Resys result is ok…
But posable symmetry result %=0

Its working on standart tool like demohead… WHY?

Please someone help me , Is this so difficult, what is the secret?
I cant understand???