Check that the lever is not bent. The finger lever should be proud of the lower tang when fully closed and depressing the trigger safety block. It sounds like the lever is not lifting the breech lock far enough to fully align the Marlin Safety firing pins which results in firing pin drag and failure to fire. The finger lever can be bent downward slightly through your own ingenuity or the application of a few bucks and a gunsmith. Charge should not exceed $20.00
Thanks; makes sense. Need a translation: “The finger lever should be proud of the lower tang when fully closed” ...
What do you mean by proud???