First one, I would like to start processing my Tmax100 negatives with the 1:9 dilution in Tmax RS developer, as a one shot developer. I use small tanks with hangers for my 4x5 sheets. I looked at the Kodak site and they only recommend the 1:9 dilution at 75 degrees for something like 12 minutes. Does anyone have any experience with this combination and dilution? Can you process it at a temp lower than 75?

Second Question: I shoot Tri-x 320 as well and process it (4x5) in tanks with hangers in D-76. Does anyone have any experience with replenishing D-76, or should I just use one-shot developer? I have to use a half gallon of developer for 6 sheets of film for one shot. Seems like a waste. Anyone have any experience with this combo? Thanks!