Nice work, as usual Bladerunner
I was especially imoressed with the milling there - good job!
One thing you might want to think about; You have four outlets to distribute flow "evenly" - have you tested to see how restrictive the various paths are? I only ask because if you have one or two paths that are more restictive than others, the water will favour the paths of less resistance. You may find that one or more channels receive virtually no flow as a result. Was that one of the points you were trying to get at msv (albeit in a rather cryptic manner
)?