Really messed up with this one, I wasn't going to post this stage of the print, hoping that it would quietly fade away. However, in the spirit of total transparency lets show the failures as well as the successes.
There are two further colours printed on this, a dark blue which is the cause of all the trouble as I printed it far too dark. And a dark green which is the tone I wanted, but isn't sufficently different from the dark blue. This wouldn't be too much of a problem if I was using different blocks for each colour, but this is a reduction print so bridges have been burnt.
Back to the drawing board!