I just hope now I'm not wrong, I'll appolagise now if If I've been talking bollocks. Just wish I could go outside and check things, but stuck in the middle of the north sea for another week. You got me doubting myself.
Spoke with a trusted Duc tech who actually serviced this bike. The hub gets installed with the axle hole clocked in the 1-2 clock position. The manual drawing is CORRECT, the description is 180 degrees out (incorrect) and the directions for chain adjustment are INCORRECT as well.
The tech told me that the "older" bikes have the hub clocked in the 4-5 clock position but this is part of the "newer" regime. He did not elaborate the difference between what years constitute "old" and "new".
Got it together and rode it. The clutch was a nightmare but the ride height and assembly are correct.
Thanks for all the help to the contributing posters.
Right I'm just home from offshore, been out to check my bike hub and yes I'm officially a senile old git. Righty tighty and left loosy and hub set at 1=2 pm.
I'll keep my mouth shut next time.
All good sir. I am just glad we had some resolution to the thread. Too many times I am searching for info just to find a thread on the right path that dies before someone takes the time to finalize it.