Welded upper balljoint.

Picked up a 72 dart with factory disc. Was redoing front end after removing the old ballpoint and pressing new bushings in put the new balljoint in only to find out wouldn't tighten. Fit snug and threaded in but was skipping at point of tighten. So welded top all 4 flat sides, then flipped it over and welded all the way around on bottom. Thoughts?
Run it or order new arms,if available?