Thanks for the feedback. I painted the wall behind my screen in a matte black but never really tested for light passthrough. I may try some material on the back to see if it further improves upon things. My real reason for the change though was considering the switch from 16:9 to 2:35 AR. I have a short throw though ~13.3Ft and have seen some posts with regard to the right size you could fill at that throw so need to test that out because I would not want to go below a 125" diagonal 2:35 screen. If it can't fill that, then I will go for a 120" 16:9 which I am sure I could fill at my throw.I also have have Carada screen I was adding backlighting to the back of the frame at night and my flashlight hit the screen and it was amazing how much light went thru it. I added blackout material to the back of the screen and it really made a difference how my NX5 looked. Just a thought before you buy a new screen.