I got my old ones out with a blow torch. There was then a metal sheath which I had to cut through with a hack saw and then hammer the shite out of them to get the metal sheaths out.
Putting the new ones in was easy with a bit of fitting grease for a couple but the majority were right brass studs. The first photo shows the metal sheath before I realised it needed removing
Then I got an engineering mate to help
RESULT!!!!!!!!!!!!!
