Bit of an update, though not a lot has happened in six months.
The pilot was bolted into his seat using the nut that I glued in his butt; that worked much better and quicker than trying to glue him in place, and meant I could take him in and out for the large amount of fettling that was needed to allow the fuselage halves to close together around him. A fair bit of one boot had to be removed.
A brace was fabricated following the template from the Gerald Scarborough book, and cemented in between the wings to fix the dihedral angle.
Currently working on increasing the bulge of the engine cowling.
And I managed to find a propeller on eBay.