lower balljoints

[love it loud]

Went to put new lower balljoints into the lower control arms of my 80.. and whoops! they drop right in easily! Is there any way to make the hole smaller or would it be ok to maybe weld the balljoint in place? I'm thinkin 3 or 4 tack welds should hold it in place pretty good and not heat it up enough to do any damage inside.. Please offer any input as I have many hours into these lca's removing the old bushings and installing polyurethane ones, as well and sandblasting and painting.. there's gotta be a way to save em! Must be some trick to holdin that lower balljoint in as I've heard other people have had the same problem but just ignored it..