I can tell you’re mechanically inclined enough to get it sorted out- All the above posts are valuable and the only thing I have to offer is don’t be surprised if it is just the smallest change- be persistent and hide your keys so he doesn’t take
I just changed trac bar, steering stabilizer, drag link, pitman arm, tie rod and tie rod ends. Took it for a test drive and it was "unstable". Felt like it would wander all over the place. Did a DIY alignment and it made a world of difference. I had 3" toe out. Set it to 1/8 " toe in and all was well. Check your toe in.
Right now set it to a 1/16 in before work today I’ll dink around with it.