I had the bolts on my UCA conversion come loose twice. After that I changed the bolt setup. I had coil-over shocks on the front which mad it impossible to retighten without removing the shock. I went with Socket cap bolts and the metal crimp locknuts. Didn't have any problems after that and the alignment guy was happier when he aligned it again. Pics are up here somewhare. Search by my handle if you are curious.

Blacktero: 90 Montero Lwb V6 RS Model. 16" Toyota Alloy Rims, Dual Bouncy's; Gen II Front Rotors & Calipers; Rear LSD

Sraider: 87 Raider 2.6 base. Work yet to be done.