Yes it's me again..
O rings sorted.. For the time being.
Still trying to get to grips with the shooting, can't get seem to get any real groups, but shots are being pulled to the right. The problem is that the windage adjustment knob won't move in either direction, where as the elevation knob is crisp and smooth with nice clicking sounds.
I don't won't to put too much pressure on it, so I've applied a little wd40 hoping that might do the trick...still no joy.
What is my next step...a strip down and lube of the windage knob, or is there a short cut?
Do any of you know of anyone in the Kings Lynn area that does servicing on the Aeron Brno B96... Also how much would I be looking at for a full service?

Cheers for all your help on the last matter, much appreciated .

Muzzie