Finally received my BW-2 from B&H today, so I used it to develop a test roll of TMY-2, rated at 400.
At the recommended development time of 7 minutes at 68F, I'd say my negs are 30-40% overdeveloped. I usually start out with 20% less than the recommended time, but since the instructions were written by someone at Formulary, not Kodak, I thought, hey, maybe they know what they're talking about <sigh>.
This is not a one-shot developer. You mix up a liter of the working solution, and use it to process up to 10 rolls. Each roll gets 10% more development time than the one before it.
So... let's say that the dev time for the first roll should have been 5 minutes. That means that the second roll would get 5:30. But that assumes that the 10% increase from roll-to-roll is accurate, which I have no way of knowing until I nail down the initial time, so... <sigh>
This is gonna be a PITA, but I'll see what I can do.