Thanks for the help fella's. I allready have a 7" dual diaphram booster, dual m/c without residual built in, a 2 lb and a 10 lb residual valve and a GM style combination/proportioning valve. I think I have a better understanding of what I need to do with all this stuff now. The diagrahm Randy posted and some other info it led me to helped a bunch. I guess we'll see when I try to Stop!