Thank you for the comments.
well decided to make a small start on the mechanical parts. firstly the props, and a question. should the stubby propshafts the glued in per picture 2
second job was to insert the rudder shaft into the rudder molding. took some courage to drill this and it was done half way in then turn around and drill from the other end to reduce the drills vibration.
the longest part of the job was to ensure squareness
once drilled then the shaft was press fitted into the rudder followed by drilling the retaining hole
the completed job, though i may add a brass bearing into the retaining hole.
regards