I have a Dalite electric cosmopolitan 12' screen that has ripples about 1'-2' up from the bottom on both sides. It looks to me like it is pulling tighter in the vertical midline. Is there a quick fix for this? Is removing the screen from the housing advisable to someone that is moderately...

I'm installing a Da-Lite Tensioned Cosmo Electrol 108" x 192" in a church and wanted to get any ideas/criticisms of my method. The screen is 300lbs. and I'm ceiling hanging it. It has 4 ceiling mounts on it with 2 - 3/8" holes per mount. I have drilled through the ceiling tiles and hung 3/8"...