I use the same software & printer and double ink layers is the only thing I can suggest. I also did a little testing with changing the cmyk values from 0-100-100-0 to maybe adding a little bit of cyan and/or black, and possibly reducing a little yellow... pushing it a little towards burgandy & away from orange.
If you never did the 2x ink layers, in the rip and print interface, go to the advanced tab & down on the lower right, click on driver options. You will see "ink layers" set to "none"... change that to 2x