Hi all
Went back to basics and levelled up the plate on the top of the head, cleaned the exposed parts of the studs of 60+ years goop and had another go with screwing the bolts down to release the head after I had dropped back down onto the block with a block of wood and a club hammer. Straight away it felt different and as you can see from the pictures the head is much further up than before and we have ran out of bolt thread apart from 'sticky corner where the bolt has bent. So tomorrow's is clean up all the exposed parts of the studs, clean the debris off the threaded portion after pushing the head back down, get some spacers ready to fit down the stud holes to compensate for the short length of the bolts and we will see....
Clarkey