I have a Series 80 that had that problem. I took a Dremel tool and a polishing wheel to it and that was the end of that problem!
About the only reason I'd pick the Colt over the Springfield in a SHTF scenario is the far greater availability of spare parts.
I just remembered I did have to replace a firing pin after about 10,000 rounds or so. Now I just keep a spare pin or two and a couple of sets of springs around along with a spare Wilson slide release.
That should cover 95% of the field problems I could have.
L
You gotta be real, real careful doing that. You can easily over-relieve it and dangerously reduce case support. Sounds like you did it right, since I see the words “polishing wheel”, hopefully accompanied by rouge.