I never had that issue with mine, wait, you said C, I have the full size.
Are you lubing the rails pretty well? I use TW25 grease on my rails. I would not describe mine as excessively tight, it's not sloppy by any stretch.
I'd be tempted to just keep it well lubed and shoot it some more. The new spring should not have been necessary but maybe it just had a weak one to start with. Really no way to tell.
I'm expecting some recoil spring myself this week. Just in case. I've never replaced one but I know my day will come and want one on hand if need be.
Have we seen a picture of the 1911C yet? I don't recall.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."