Discovery hub / swivel ball

Hi all I'm after some advise I recently changed my swivel ball oil seal because I thought it was the cause of a leak however I still have a problem and the leak seems to be coming from between the shims and the hub any ideas on the cause there appears to be no play in the swivel so I'm unsure what to look at

Many thanks
Jon

do you mean between top pin ,shims and housing if its leaking from there its too full or breather blocked,shims act as gasket

Thanks James I will check the breather again but I'm pretty sure it isn't blocked it funny but it's only happening on drivers side passenger side is fine and yes it has got oil in lol
When I blow into breather pipe you can feel the air going into axle and then releasing so I'm guessing that's ok ?