Briefly. IMac, latest Sierra OS., Epson SC P 600 printer, latest drivers 9.86. Software LR and PS both latest on subscription. Output required, decent B/W print. Result magenta cast using the paper makers profiles......and many more.. Now where lies the problem? I have tried just about everything even downloaded other editing programs. Cut out software by printing with " printer control" selected......result, just the same. However, Epson has an Advanced Black And White mode, tried it........magenta. It is only by applying something like +30 H and +28 V that I can get anything remotely looking like a neutral print. Incidentally Luminous Landscape reviewing my printer in ABW suggested control values in the order of -2H and -3 V would produce a perfect neutral print, WOW some difference, if only the printer is involved in ABW, how can it not be the cause of the problem? Printer is connected USB, nozzle check is 100%, Epson blame,Apple, Apple blame Adobe, bother blame Epson and all the time I blame myself for ever getting into this stupid game. Should have taken up self flaggeration......would have been less pain.