I have quite a headache with a used Impact M2 I bought recently. Yesterday I installed a new hammer spring and noticed a scratching sound while cocking the gun. I reinstalled the old spring and the problem still occurs. When I pull the leaver the loading block is sliding on the half way to the right and the reloading pin scratches the metal sides of the slot where the pin sits in. Also the barrel sleeve makes contact to the loading block and the gun wont cock anymore even the leaver is pulled all the way back. I noticed that there was a edge of the pull leaver missing right where it connects to the loading block, but I don't know if this explains the wobbling behavior of the whole block because there haven't been issues like this before. Did anybody had the same problem, or know whats going on here?