I’m late to the party but everyone is jumping straight to bending the hammer…
First I would check that the lock bolt is pulling the lock snug to the barrel.
Next make sure the hammer is screwed tight up against the tumbler.
The way I have done it is heat the hammer in a vise, bend it only to find the hammer screw was loose and now hammer is bent too far. Take hammer back off, hurry back to vise and break it cold with big hammer.
Oops, did it again! ;-)