Digital BW, The Print

Thanks for the advice, everyone.

It sounds to me like the most likely error was that I was 
driving the 3200K floodlamps with a dimmer, not at the rated 
voltage. Everyone agrees that was a mistake.

I'm confused why why they shifted to magenta and not yellow 
as Stephen Petegorsky suggested they would when the lights
were dimmed.

I'm going to shoot another set tonight with full strength
floods and use a Q-lab to process them. But in the meantime,
I'm still interested in a discussion of the magenta/yellow
question in case that might help nail down the problem even
further.

Thanks again,
david