I have been consistently getting varying degrees of a red cast on my negatives (cyan cast when scanned) even when freshly mixed. Im using tetenal in a combi-plan and kodak 400 nc. I am following the given times except for a longer wash, and dont think its a temperature issue. Could this be fixed through a longer blix? I am also processing up to 12 sheets at a time, has anyone had issues with processing more than 6 sheets of 4x5 in a combi-plan? Thanks!