Symmetry issue

hi guys,

I have some problems with making a symmetric form..

You see that the displacement is unrealisticly asymmetric so the model has some symmetric issues.
When I use the evalution tool symmetry on the assy i got this results

So the top and de base are asymmetric..
But when in open the parts themselves and then when i run a symmetry check( im using the same reference plane) both part are labelled symmetric..

Any ideas?

SolidworksSimulation