Evening all (anybody out there?)
Did a bit more today, stripped head the valves look nice and straight just need seats grinding when it and the barrels come back from vapour blasting.
It took a full week of nipping in the garage pouring plusgas down the studs and whacking with a big mallet before the barrels came loose the pry points weren’t much use, I did try bit of heat with a gas torch not thinking about all the plusgas, went bang which may of helped loosen them. Not recommended to be fair.
Attached is picture of the studs before and after a clean.