The hinge point is sloppy from the factory. I recall I crimped the sheet metal hinge knuckle with pliers 'many moons' ago. Easier, but still a PITA to retain a bulb replacement.
The wire bail is a medium spring steel. Unless you hork it up with a vice grip and pry bar, it should fit.
There is no replacement that I know of. But you might be able to bend something out of a heavy duty paper clip, *if* you have time, and *if* you have a ready supply of happy drugs.
Rick