Fastbolt, if I could I'd have your baby. Outstanding information.

I just measured the slide stop with a straight edge and it is bent, definitely not a true ninety degree angle. The side plate also has a bit of wiggle. Between you and Jon651, I think you've solved my problem.

The recoil spring was weak when I bought the gun. I wasn't surprised with a thirty year old gun and I replaced it immediately. The previous owner must have fired some hot loads, just never replaced the spring, or both.

See guys, I told you that guide rod spring wouldn't come out.

I can't express how much I appreciate everyone taking the time to help out with this.