Cannot get full front suspension rebound.

Talk about wanting to pull your hair out! So after a full weekend of screwing around. Lower control arm loosened up, strut rod sloppy loose, lower ball joint freed up, still no change. I pull off the dust boot on the hotchkis upper, reassembled, and started looking. The ball joint cup is hitting the shaft of the upper ball joint, and creating the stoppage. I've got a spare lower control arm, and thinking of buying, renting another spindle to rule them out. I've also got a spare lower ball joint, k781, but all the casting numbers match up, so I wasnt too hip on seapping it out. I just keep coming back to the arm has to be welded off. All the adjustments are the same side to side. Maybe I should rent or borrow a late A upper control arm as well?