We did print a funnel to collect all the tubes and direct it into the glass. I can upload that if you want, nothing fancy. Yea, the arduino is rather simplistic and I am not sure I can support both approaches, but if the parallel mixing one works that would be the way to go. I'll work that as soon as I cobble together a UI. I could support timing in the parallel one so you could use the timing to synchronize when an ingredient is added relative to the others. That I can do.