Digital BW, The Print

Greeting from your friendly neighborhood lurker, I have a simple 
question....I Have 1280 with MIS VM ink, I am having a problem with 
the curves which I am working on...I switched from  a 1520 to the 
1280, I think my inks are in the wrong position. Which is the darker 
ink in this ink set, the cyan or the magenta

Thank you, Deborah Betz