Going to try and describe my problem without getting to confusing. I have my Home Theatre set up. I have a screen on the wall that is 100in 16:9. Question. When I watch a movie I have the black bars on the top and bottom...that's fine, I get that part. But, above the black bar on top and under the black bar on the bottom there is light from the projector. It's about 4inches. How do I get rid of that?