Linda, we have similar rigs and we have no wind noise at all with our 07 Beaver. Our side windows can set up a howl if the wind deflectors in the bottom slots are missing. Replacements are available or you can move some from rear windows forward to check if that's the problem. Our door has a seat that inflates when the rig is running. Apparently it is difficult to adjust it properly. Our rig went back to the factory twice before it got fixed right. Even now, if we open the entry door when the rig is running it will not seal back up properly until the rig is turned off allowing the seal to deflate, then restarted.
To pinpoint wind noise get a stethescope, medical or mechanics, either one will do. Pull the bell off so you have an open hose end. Then while driving and hearing the noise, have someone place the open end around anywhere that you suspect the leak. The noise in the stethescope will confirm exactly where the leak is.
Ken