This is my first post on this forum after having just re entered the photography realm after a 6 year break. I am dusting off all of my equipment from MF to LF and a lot has changed. My favorite film (APX 100) is no longer available without buying Rollie's expensive version, and I feel it is time to get energized into something new. So I started looking through this forum, and the LF forum's and saw that TMY and Pyrocat HD came up quite a bit, and I stumbled upon a great website that 'Ken Lee' built that has some superb images using TMY and Pyrocat HD. It was his site that really started my journey back into playing with B+W again! So I continued my searches on past posts, and am very interested in pursuing using the TMY and Pyrocat HD combination. I am starting out slowly again with my MF gear (Mamiya 6 MF) and as I dev all my film in daylight tanks, I need to know a good starting dev time for regular 'Normal' Dev using a 1:1:100 dilution, and minimal/stand agitation. TMY 120 film will be rated at 400, unless folks recommend otherwise? There were some threads on using 2:2:100 dilutions, and those times are certainly close to what I am used to souping my films at in previous years. How much different will 1:1:100 times be? This forum is a superb tool by the way!