My pump is fairly powerfull: Little Giant 2-MDQ-SC (see PQ curve below). Max flow around 525 gph, max head 14.6 feet.
I understand what you mean about the nozzles: I recently (tried to) run the calcs for LiquidRulez
here.
What I meant about the flow being at 1mm is just that: if you look at the first graph I posted (from Roscal's analysis), it shows that out of all the channels, most of the flow is concentrated at the bottom 1mm: the rest is almost stagnant. I'm kinda hoping that the new inlet geometry will kinda help this too.