Blending two meshes with a fade into each other with Opacity Mask (Problems)

Hey Peopz!

So, i want to blend two meshes into each other.
I have painted a soft mask, from white to black, with a nice fade/gradient.

The problem is:

1.When i set the Material to Masked and connect the mask under opacity mask, the fade is not visible. Instead i see a hard edge => Not good

  1. When i set the Material to Translucent, then my mesh gets darker in color (No problem, i can increase the brightness) but then some spots from the other side of the mesh become visible, and this looks strange!

How could i fix this?

Thank you!