I have an Atlas 3950 Exposure Unit that has brand new 1000 watt halogen bulb and 2 new 35 watt blacklight flourescents. I got them from Atlas to make sure I have the correct bulbs. I use Image Mate DC521 emulsion. My exposure time is 11 minutes. I coat my screens 1 over 2 so its not that thick. I know its not metal halide but I would have thought it would be better than this. Any thoughts?