I consider any loose bolts @ this point a dealer problem, seeing as how these things have been sketchy at best since the first 700's hit the road. I still can't get every unit to come in with the right number of bolts in the bag. We fortunately haven't had many loose bolts but several other stupid obvious stuff. The seat belt bolts are a dealer installed item, I find that no one taps these holes out before installing the bolts. Also those are the only standard size bolt on the entire machine. Took us awhile to find a tap since we kept trying to jam a metric one in it.
I've noticed some of the bolts on my 500 seem way over tightened. Usually these things are put on a with a calibrated nutrunner at the factory so not sure what is going on. I tried to take off my door latch assembly allen head bolt and could not break it loose, it was about to strip the head so I just left it alone...