Will 82-107 work for all door thicknesses?

The 82-107 should fit on most door thicknesses. It's a little tricky to install, but it might be what you need to fix your handle. You may also want to check the strike plate on the jamb, it might need adjustment. Also take note that your mortise lock might be worn, making it hard to turn the lever. Finally, check the rollers on the bottom of the door. They might need adjustment or replacement. These are all reasons why your latch might break like this.