Sorry Daryl for butting in like this so please forgive me but it was the other way around the Scott 20 turned out to be a Scott 22 position 29R4,the comments say Neinkein plating diagram is wrong,plating confirmed by vertical strip 9-19 29R4 Siegel 994 lot 1107,PF cert confirms archive image incorrect,Richard also confirms that there is an undocumented "curl" in shoulder.
This is the image of the Scott 22

and I think this will be the one that they will use to replace the 29R4 in the archives have I got that right Daryl so I thank you for doing all the leg work and the credit is duly deserved.
Thanks mate
Best regards Harry