His light is the biggest problem (he needs like 100 watts), I have 23 watts on a 2.75x6.75 screen to get the results I do. His screen is way to big, he needs about 3 more bulbs or a lot smaller screen, say to the tune of 75% to 90% smaller at minimum to get the expected results I do with a 23 watt bulb. I would say to cut the screen at least in half and see what happens then keep trimming it until you get the best results.