Is any one able to clarify which way round the metal scraper ring goes on?
I tried assembling the way it looks MR did it and it wasn't going together well at all so i swapped it round the other way and everything went in beautifully.
Basically, the scraper ring is shaped a bit like a Z... I have fitted mine so that one end of the Z sits inside swivel housing and the other end of the Z sits outside the scraper seal... further to the desription... the way that I have fitted the scraper ring matches the profile of the step inside the swivel housing.

Also, what do you mean MR when you say "bed the scraper seals in"?