Had mine come loose also, didn't realize it was so common. I run lock tight and nylocks on the back. If there isn't much room you could get the thin lock nuts, I think they're called half nuts?
Hey did you do your four link yourself or did you buy the ord kit ? Really been thinking about doing it .
I have a friend that built it. It's a mix of parts but not from Ord. It rides awesome now but I would like to add sway bars for street driving