Help with Valvesprings and valve float. Noob

PRH said
That doesn’t explain what appears to be a silver ring on the top of the retainer where the black oxide coating is being rubbed off.

That was from me trying to remove the old springs last season with a spring remove tool that you use the hammer. And reinstall the Comps with a hand squeeze style valve spring compressor. Kept sliding around on top of the retainer when getting centered.