Well, now I'm curious.
My OEM BPV was definitely contacting the hood insulation. I recently installed a Forge, which may be slightly shorter; I'll have a look at that.
On the ducting, when I have time I'll cover the TMIC in painter's tape, then dust the rubber duct seal with powder & see how it looks. I have no reason to believe there's a sealing issue, by looking through the hood scoop with the hood closed.