Ministar Prism

Not sure what I am doing wrong.  In the promo video, and in other movers I have used, when the prism is added to a gobo it divides/spreads the gobo effect, but you still see the gobo pattern.  When I tested this last night with the Daisy pattern and prism, it completely blurred the gobo pattern.  I could not get it in focus with the Edge parameter when the prism was in.  It was sharply focused without the prism.