I currently have a (16x9)98 inch diagonal DIY screen that uses white black out cloth. I projecting from a Infocus 4800. Walls are dark, and the screen is framed. I have calibrated with DVE and I am not getting quite as much contrast or in my words punch out of the image. I believe the black out cloth is giving me a gain somewhere right around 1.0, I was wanting to get around a 1.3 - 1.5 gain out of it and was wondering what a good paint combination would be to coat the screen with to increase the gain. I have read several posts with recommendations but mostly say it depends on the evniroment its in. I have good light control the walls are dark grey and the screen is framed with black felt. Anyone with a DLP projector that has painted a screen to increase gain please give this DIYer some pointers.