[Hitman]

I would replace it, for the reasons previously mentioned, and because of the wear on the spring.

I've never seen a spring wear like that, but have seen several rear axle housings and front axles wear due to spring sag. I'd question the spring and whether its really serviceable. It is likely not the proper metal due to the sag and de-arching that allowed it to touch the axle housing for so long. The wear on the spring is not normal.

The ability to weld is one thing and even if it could be done, I think this leaf is bad.