Getting ready to replace the bolts that attach the pop top to the hinges at
the rear, four on each side.  There appears/feels like there are nuts that
those bolts go into, not threaded into the hinges themselves.  So, are the
nuts captive nuts (attached to the hinges) or are the just a nut and lock
washer back there?  Why the question?  It's going to be easy if captive
nuts, more complicated if trying to juggle a wrench blind on the back side
and the screwdriver in the other.