Diff leaking with air lockers on

[lcruiser100s]

Hi After a bit of advice.
Diff and swivel hub is leaking. (solid front axle) only when air lockers are on. I have been told that it could be the breather that is blocked or that the air locker seals are gone. Does anyone know If there is anyone around the east london or south west essex area that knows ARB air lockers. and how much should I expect to pay for drive in drive out fix.

[wildsmith]

You might get a better responce on www.tlocuk.co.uk/forums . Doesn't sound like a breather problem though, the ARB should be completely leak free and not pressurising the casing ...