Anyone out there shed a little light on the Kittredge double hammer shotguns? I've got one with 18 1/2 inch barrels, 12 ga, has a nitro proof on the watertable. I'm looking for any information about age, where made, etc. Also, any shotgun guys out there that can tighten up its loose action, maybe a new hinge pin, etc (we do rifles and lay no claim to working on shotguns). I've shot the gun and it it operates fine, just loose in lock-up. Any help would be appreciated.