Only one head so far on my Dual 1.1. running Alex's 1.1-RC6 Dual RCBugfix. I do believe I have it dialed in. V6 head, 0.15 layers using MakerGeeks Raptor Series PLA 6000psi tensil strength filament through RapetierHost over USB. Progressions of the same model... notice the bad over hangs on the middle green. Poor lettering on the previous prints. Oddly, when I go to print a second run of this same print job, the nozzle is lower and digs into the painters tape. I can only rectify by resetting the printer power and then re-leveling the bed for good measure. I can only hope to get the dual titan direct project going and printing just as good as this.