I too did various iterations of door weather stripping to eliminate air leaks and wind noise; and at this point I believe the door wind noise is basically eliminated. What seemed to work best though, is when I was able to seal the side windshield posts at their base. WRV didn't do a very good job here in many of the units in sealing this area; and I think this is an area that is as much a culprit of air entry and noise as the door. It is fairly obvious that the entire generator slide area is not completely sealed to outside air pressure when underway thus creating a pressurized area with the well sealed (at least it should have been) firewall. This pressureized air has to escape somewhere, and apparently not all of it goes overboard beneath the coach. When I sealed the side windshield support columns with mostly spray in insulation I was able to eliminate the vast majority of wind noise and outside air entering the coach.
As with most of these types of efforts, this too will be one of those trial and error situations; but the results could very well be a dramatic improvement.
2006 Alpine 36' FDTS