yup, supposedly they addressed that and the stainless steel sleeve issue for the nw impellars(the gen -x nw), but euroreef is just slapping in their own impellars into the gen- x pump, and putting their asperating venturi on it as well, of coarse.
i was actually impressed with the foam from the gen-x nw 2400, with their ocean runner style nw, but the air intake had to be muffled becase it was louder than hell. i was able to buy an asperating venturi(euroreef style) from kent of all companies, they carry it for their nautilus skimmer, and i was able to go onto the website, and order one over the phone, they charged me i think like 5 bucks for their little kit that comes with a regular venturi, and a pre impellar aperating venturi
also, using the gen-x nw impellar actually gives you more pressure than their regular impellar, because the "needles" are more like little paddles, i found that out while using the pump to power a regular venturi skimmer