Brakes on my series 3 safari are all re built, re adjusted,bled of all air, all working perfectly. But adjustment was loose on the servo rod(the bit that pushes the (new!) master cylinder) and now no matter what I do I can not get brakes to work as they should. Either pump twice to get any pressure or extend rod a miniscule amount and get hard pedal and brakes wont release properly(dragging) split the servo apart checked it out it is O.K. what am i missing. Its driving me f***ing nuts. HEEEEEELP!! surely the adjustment cant be that fussy on an old land rover?