Might wish to thoroughly have whatever problem diagnosed AND corrected. A bolt almost in battery "uncocked" with firing bin protruding from bolt head is a hazardous 'pusher' if a live cartridge involved in position proximate. That's a sufficiently strange aberration as "uncocked" occurring, I'd look further! So far it seems you've diagnosed 'manifestations' of the problem, but not necessarily the 'causation' as the bolt itself so positioned.
Just my take
Best!
John
