Still got heart burn from one of them back in the mid 1950s. It was Gramps' and I cleaned it rear good one night cause me and Cuz (2 years younger-were staying over the W/E at Gramps') was going hunting next morning. I cleaned it down to the shine! And I tightened everything jam up tight! I was good at taking thing apart and putting them back together with no parts left over!
At daylight we were sneaking along a creek trail, in the light fog, turned the corner and I run face to face with my first Fox. It wheels around and starts running back out the trail and I pulled the trigger on him and zzzzzzclick! I could have shot all 15 rounds at him-but no. It was so tight the firing pin Mech. would only move at 1/2 to 2 miles per hr.
Big memory moment right there.
Don't over tighten nothing.
Good luck on your search.