Andy,
Every WNG that's put back together with original parts possibly yields more information for others who are rebuilding from bits and bobs. The more the merrier.
Re the steel primaries, looking through the Clubs list of factory drawings there is this listed:
GA83: Alterations to be made when fitting steel chaincases (dated 1943) It's listed along with other 1943 items including the engine plates
Maybe this document explains the location of the additional holes?
GA83 GA83 Alterations to be made when fitting steel chaincases W/NG
2305-43 2305-43 GA83 Engine plate W/NG
2306-43 2306-43 GA83 Engine plate W/NG
5874-43 5874-43 GA83 Oil pipe W/NG
5882-43 5882-43 GA83 Oil pipe W/NG
6151-43 6151-43 GA83 Battery platform W/NG
GA83 is listed as a drawing so maybe all these parts are on the same document? Has anyone got this document?
I have located about 33 WNG specific drawings in the Club's list....but at £5 for the first, and then £3 for subsequent ones ordered, means getting them all would be rather expensive and some may not really help the project.
Maybe I could approach the club and see if they would sponsor the research by making those drawings accessible FOC as I am doing this to help myself and other club WNG owners understand the models history
Cheers
Alan