After many failed attempts to dual extrude on top of a single extrusion I broke this into four separate extrusions. You can attempts below with miscalculated layer heights and ooze control issues!
Test run of printing 3D logo. Set second extrusion too high.
Test run of printing 3D logo. The second extruder kept oozing everywhere!
Test run of printing 3D logo. The second extruder kept oozing everywhere! Ooze sheild even left a mess!
CAD Monkey Army 