Right - went out and bought a couple of three armed pullers - I've been meaning to for ages - so this was the perfect reason for doing so. I've wished I had some on a number of occassions while working on my Stationary Engines.
Good/The right tools always make life so much easier, and less expensive in the end because I break less things
So now with my new pullers - Blade Boss and Pulley are off

Shall wait till tomorrow to see if that has helped me much or not.
Not entirely sure which version of the manual I have - I got it as a PDFand it doesn't have the cover pages.
Polybus