well my boy and i decided that today we would sort the brakes out that were sticking on and replace the seals behind the drums, big mistake! the drums just would not come off we tryed every thing including heat, so after four hours we took drastic action we drilled two holes in each drum then tapped a thread in each and inserted two 10mm bolts into these hoping by doing them up it would push the hub off but there was still no movement then we tryed a puller connected to these bolts hey presto 7 hours later i now have good brakes all round and no leaks