Thank you Daryl for the copy of the drawings. (I have sent a personal email) They are certainly worth browsing.
If we can take you up on your offer, Eddy, I'm sure they would be of interest.I can reduce them, but it would loose something in the translation. there is an awful lot of detail on them. 7.9 megs worth to be precise.

I shall carry on with the route to building the feathering versions from Mike Mayhew as the engineering is really quite something. I appreciate they do not improve the models sailing abilities and may cause drag on the system, but they are a genuine working machine part which will look good, (if I can finish them to specifications).
All the best
Ken