Evening All,
Many thanks Richie, Fredrik, Skyhook, Ian and Willem for your very kind comments.
I have completed the last parts of this build and the model is now complete. The first step was to make the main undercarriage which was fashioned from 30 thou card which was cut to V shape: well not quite a V as it has a short horizontal section between the legs. An axle was cut from 30 thou rod:

A strip of 20 x 30 thou strip was filed to aerofoil section and attached to the forward parts of the legs to form a spreader bar. The tail skid was constructed from 20 thou rod and was a rather complex affair but was straightforward to construct:



A propellor was carved from some hardwood strip and a boss made from a disc of 20 thou card:

With the final painting completed, wheels fitted to the axle and propellor in place the model is finished. I have not put on the serial number or the coloured stripe on the nose as seen in some photographs: I have gone for the simpler finish:

I will post more photographs in the completed models section shortly.
Thanks for looking
Stephen.