Well I completly took my 1900 apart an examined the frame, toggle and firing pin. What I found was as followed:
1. There was an imprint on the backside of the frame where the toggle has hit the frame, but not all that bad.
2. Obvious areas on the toggle knobs where they have been rubbing somewhere on the frame.
3. The inside of the frame had an indention where the firing pin guide has been hitting the frame. The mainspring lever ctach on the rear toggle had some marks on it around the location of where the firing pin guide would be hitting the frame, but no excessive scarring of the metal.
The "T" portion of this levr was slighlty bent, but still sits in the main spring seats with no problem.
4. The ammo I have been firing is "Fiocchi 7.65 parabellum - 93 grain full metal jacket"
Look at the pics and see what yall think and what should be done so I can still make this a shooter.