Thanks for the replies, I needn't have bothered cleaning out the rubber remains now ! Trying to keep all the parts that are serviceable, fulcrum may well be the only thing I will need, castle nut will not move, and as tub is coming off, I will just grind the nut off.
Using poly bushes now, so no need for the press.
Callipers came off yesterday and all rust ground off, rust eater painted on and sprayed black this morning, new pistons going in at the weekend.
The list goes on really.
Busters guides are a blessing I agree !