Thankyou, that sounds exactly how mine is set up now. Just enough preload with the end cap tightened up to take the load off the cogs. There is no shim fitted under my stepped washer though & I've put a dab of loctite on the end cap as my locking screw doesn't line up.
Had a shoot with it this afternoon though & it's soooo smooth!
I need to overhaul the model 65 that I've just bought, where's the best place to buy seals, Chambers? And is there anything else I should be replacing as a matter of course while it's in bits?
Thanks.