How to Ignore Opacity Mask when rendering Custom Stencil?

Hello, I’m currently trying to draw an outline for Opacity Mask dithered actor.
image

Since I’m using the opacity mask, the outline tints the dithered actor by filling the gap.
Is there a way to avoid this? (I MUST use opacity mask dithering, and generating outline otherwise is not an option)

image
Rendering custom stencil w/o Opacity Mask enabled will solve my problem, but I couldn’t find a way yet.