Installed upper driver side ball joint today. My truck is a 99 250 7.3l srw(cause apparently that's relevant some how) 4wd. Ball joint came out fine(it was a notch I mean but it came out) replaced it pressed on the new one. I noticed on the bottom there's a place for a snapring but the can only goes in far enough to sit flush with the bottom part of the knuckle. After assembling it the first time I torqued it to 105 like the book says and it slid out of the knuckle about 1/4 inch. Took it all back apart repressed it but it did it again? Other wheel has the same setup but it's torqued to 105 and the bottom is still flush. ***?