So I picked up a new 3.5 ml Nova today have been using the mini for a while. Well just found out that I got a v1 witch I'm not to happy about as they said it was the newest model but that's not what bugs me as it hits just fine just a little loose and airy. But it has a funky head on it the mini I have is like a cup on top of the head and this one is flat with a post on it. Did I get a knock off and will the other heads (cupped top) fit on it or what I'm lost what to do here.