I think "not properly tightened" is an understatement. I've never had caliper bolts back out. It's usually the opposite. Seems with all the heat/cool cycles, they usually get stuck in. I suspect they were finger tight and the tech forgot to torque them.
Sucks on the shocks, but the HD Fords eat them up on the front. If I could get 2-3 years out of the fronts, that was about it.
j