> So, where are the bolts? Probably sitting forgotten and unlabeled (because there is no formal record number to label them with) on a work-in-progress bench, unless someone already tossed them in the scrap bin to tidy up.

So this is like when I would take apart and re-assemble everything when I was a little kid. Sometimes I would have several screws left over. It's a good thing I wasn't making airplanes!