I have never had the issue of proper torque come up; it seems to be a "detail for geeks", and some assure me that the worst that will happen is that the inspector will ask to see your torque wrench.
I don't understand the concern over re-torquing a fastener. If you have tightened it to, as, 14 lb-in, wouldn't applying 14 lb-in to it again have no affect? It's not like a hammer blow, after all.
If I did have a concern, or wish to verify the tightness of a fastener, it seems to me that the best way to do this is to see what it takes to loosen the fastener, then re-tighten it.
