Took a lot of work to get the print quality sorted - logos as background maps was a problem, logos as image files had no transparency and that was a problem too. Don't pretend to understand it all but it was causing some hassle until very near the event!
Re the white border to lines - it was specifically added to aid colour-blind people. Sorry if a bit was missed in checking that it didn't create anything people might see as a gap where one didn't exist, hope you didn't lose too long.
Thanks Jon and thanks for taking the time to get the print quality right - wish Edinburgh had done the same!