I installed a Da-Lite Tensioned Cosmopolitan 16:9 92x52 (106 diagonal) Da-Mat 1.1 gain screen several weeks ago. When the screen is lowered out of its case, it smells like... well, it's hard to describe... it has this petroleum-like smell. It seems to have diminished some, but it is definitely still there. What is it and will it ever go away?
Also, small black marks (dots) are showing up on the screen. They look like marker marks. They weren't there originally, but several have appeared. Are these marks coming off the backing onto the front when the screen is rolled up? I tried washing them off with Ivory dishwashing soap and water with no success. They aren't distracting, but I'm curious.