Marco,
You are probably right that the dealer did not do the proper PIC before delivery and thus made sure the stuff was tighten. When I say tighten I mean tighten properly and to proper torque. Regardless if it is a BDM dealer or the local Ford or Honda Dealer, dealers do not always do what they should.
As far as pre-checks go, IMHO since we are allot more suspectible to being stranded or worse having a wreck from something coming loose or not up to proper conditions, a pre-check is estintial.
That said, I am pretty sure (though I do not have it in front of me at this time) that even my Owners Manual indicated to check for loose bolts, proper fluids, tire inflation, tire damage, etc before each ride. I am pretty sure even the rice burner O & M say something similar.
The problem is that many (not saying anyone in particular) but many many folks do not read the O & M be it the BDM or the manual that comes with the new PC that was bought. Some of that can be seen on here with the many post of how long is the paint warrenty or chrome warrenty, or how do I check my oil, etc. All seem to be in the O & M.
I know that many folks have had issues with their bikes and I would be lying if I said that mine never had a problem. That said, for myself, my 2005 has never left me on the side of the road nor reluctant to get on it and go anywhere, be it running down the road to Shredder or going through 4 states to meet Marv and some others. I have over 20k on mine and would have had many more except I have spent 70% of my time since owning it out of country where I could not ride it.
Regardless of what many may have experienced and what many other assume, speaking from my own experience, I can not say that BDM is any worse than others including the Motor Company when it comes to reliability as long as one takes care of it as recommended and sticks to the basic which includes a pre-check. It sounds like you also follow those basic.
Will say one thing to many that may be reading this, highly recommend that one gets a good torque wrench or better yet two. That way when the owner goes to check those bolts, the owner can make sure that they are up to the proper specs and thus not strip out, elongate, or not getting it to the design specs, etc and thus increase the relability by a great deal.
The two torque wrench are to cover the small and do so in inch pounds and the mid size for the foot pounds. One is less likely to strip a bolt that is spec at 120" pounds with a 0-250" lb torque wrench than using a 10-75' lb torque wrench and tightening to 10' lbs.
Also cannot over recommend use of proper thread sealent (Loctite), sure will help to make it less likely to be stranded on the road or worse.