For my 47 Flyer I am still trying to get the head and barrels separated and take off my hat and most other clothes (there is a limit) to John Smith. well done. I too have read and digested the multivarious advice offered in earlier exchanges. wow.
I predict defeat for myself and would be willing to buy a servicable set of usable head and barrels (preferably separeted) if anyone is able and happy to part with them. As for pistons I will worry about them later!