Thanks Steve.
Here's the bad news:
1) As you may be able to discern from the photos above, the port side was not fitting up against the main bulkhead behind the pilot's seat.
2) When I attached the top of the fuselage (I've not posted those pix yet) I thought I'd be able to get the sides to fit with a liberal amount of glue, clamps, and rubber bands.
3) After overnight drying, no such luck. Popped back open after a short amount of gingerly handling the model.
So, last night I went overboard and practically poured in "Professional Plastic Welder" (from Micro-Mark) and this morning it looks like it might hold but I'm not very confident that it will.
If it doesn't hold I'm trashing it. For one thing I now have really obvious marks on the fuselage sides, top and bottom where my clamps were and, if I'm going to spend time trying to fix the worst of the "gouges", I want to be absolutely certain that it won't pop open at the seam again. I'll give it a day before I work on it again ... I'm hiking Triangulation Peak in the Cascades today so I'll not be stewing about it.
My theory as to why I couldn't get it to close properly has to do with my perhaps not having seated the parts to which the pilot seat is glued (on my kit they are parts D28 and D36) deeply enough in the hull. I'm not really sure. It's difficult to dry fit ahead of time with this kit - at least for me it was - since one would need several more hands to hold everything in place as you're checking for proper placement of the afforementioned parts.
Enough whining. I'll carry on tomorrow and see if it holds.
Just a heads up for when you get to your kit.
P.S. Yes, if I get that far I'll be rigging it.