I havean earlier modelRemington 1100 shotgun. It has had a loose stock since I got it andI can't figure out why. I took the recoil pad offand tried screwing the bolt tighter just like the gun guy said to but it won't tighten. The stock doesn't feel like it will fall off(obviously), it just jiggles a little. I noticed that almost every(used)Rem 1100 at the gun shop hada rather loose stock. Have any of you had this problem? How do you fix it, short of taking it to a gunsmith?

appreciate it