I recently acquired a Baby Browning 25 ACP. I fired it and it was in working order. Then I disassembled it, cleaned it and (thought I) successfully reassembled it. My problem is that the cocking indicator on the rear of the slide sticks out whether or not the gun is "cocked." Pulling the trigger does not release the firing pin. I have examined it over and over and I cannot figure out what is wrong. Can anyone help me with this? Thank you if you can.