Luckily the cardboard wing profile hot wire templates work well so that saved a great deal of time cutting and sanding board ones.
The two halves were joined with gorilla glue ( my new favourite modelling tool) and the full length ailerons were cut away from the wing. These are too thin to use anyway and will be added in balsa.
A full length balsa sub spar was glued to the rear of the wing to take the aileron hinges and provide a firm fixing edge.
The wing bottom was grooved to take a tapered spruce spar shaped from 12mm by 4mm strip bought at the local DIY store.
Again this was gorilla glued into place and left to dry.
The whole assembly was sanded and given a coat of spackle which was then sanded again, when dry.
Now I could test fit the fuselage to the wing.
To make things really simple I've decide to make this a one piece model. No wing fixing to worry about and the whole fuselage top as far back as the rear of the cockpit will become a removable hatch for gear access.
Just need to silk and varnish the wing now and then I can glue the fuselage and wing together.