Help with stripping a 1904 ShtLE Mk1 bolt of its cocking piece

[5thBatt]

If it still has the early firing pin that has a lug instead of the two oposing holes for the firing pin tool, you just need a bolthead that has the notch cut out of the bottom, do the bolthead up, put the cocking piece into the fired position & slowly undo the bolthead, you should feel the lug & notch engage then unscrew the two together this will not completely undo before the bolthead unscrews completely, you will need to pull the cocking piece & firing pin back & redo up the bolthead & repeat, this should remove the firing pin from the cocking piece.