I didn't read that whole thing but if you let your issue fester for a year of course you won't get it to torque properly. The bolt is supposed to have a little room in the hole.
In hindsight I did let it fester. I just re-torqued and didn't address the root cause and the symptoms got worse each subsequent time it occurred. I didn't check until after each wheeling trip so it's even possible that bolt backed off even in city driving. I can't say. I now check all the suspension components at each oil change, plus after wheeling. Hopefully that's enough.