I had the same problem when i used Water resistant duel cure emulsion. 1:1 coat on a 110 mesh, 500w lamp for 13 minutes 18 inches above the screen. No luck washing out my image. After that I used the same setup but different emulsion. This time i used Ulano QTX Ultra-Fast exposing emulsion and my image washed out easy with a garden hose. I was able to print some shirts on my silver press using plastisol ink. Im gonna try the water resistant d/c emulsion with my DIY 1000w metal halide light.