Well with one thing and another computer time had been down but a slight chance for an interim update with some photos. These are best described as building the "flappy bits".
Picture one
This bit is in fact not a "Flappy bit" but an essential part of the construction process, the "stabiliser". Like the wing the centre section is also separated by a 91/2" inserted centre section.
picture two
This is the construction of the elevator, which is all one piece.
I've taken a bit of a gamble here and reduced the overall area. This is because I have assumed that with the increased centre section this may cause the elevator to be too effective. I can always build a larger elevator if necessary.
picture three
Rudder construction is fairly straight forward, times two.
Except where the proposed leading edge of the elevator passes through the rudder I have put some balsa braces as some "balsa bashing" in the shape of a cut out will have to be made in the rudder edge.[picture four]

I didn't take a picture of the ailerons!