[VAC] floors and water tank problems

["Pete Ryner" <pryner@xxxxxxxxxxxxx>]

Ok, bad on me.  I know there have been countless discussions over how to
door floor and water tank repairs, but I thought I would never need the
information, so I just deleted those files.  Now I'm in the midst of trying
to repair a substantial problem in the rear of my '68 Ambassador.  Long
story short, I attempted to replace the toilet and found the entire rear
floor rotted.  I cut out the bad part, but am confused on how it should have
been assembled.  The way it is assembled, the plywood floor fits into an
aluminum channel along the rear of the trailer, but the wood is exposed from
below outside the main frame and along the back where the storage box is
attached.  Although it is covered by the belly skin, there are lots of gaps
so the wood is always exposed to the elements.  Is this correct?  If so, it
seems prudent to use maring plywood and coat with fiberglas for the best
protection.  Second problem:  After getting the rotten floor out, I found
that the black water tank has broken loose around the vent.  What is the
best compound to glue this back together?  Finally, the metal ring around
the toilet flange is simply gone.  Is there a source for these?  If so, is
there any way to cut the metal in two and re-attach it to the existing
flange?  I'm afraid to try to un-glue the old flange and glue a new one in.
Any help will be greatly appreciated!
Pete