You might try plugging the leaks with Aunt Jemima.
Phaedra

----- Original Message -----
From: John Schaper
Subject: Maple Syrup?

" Last winter the smell of maple syrup from the rear
heater was getting worse,
so I replaced the rear heat exchanger.  It was leaking
some, but with the
new exchanger, I can't discern any leaks.  Yet when I
turned the rear heater on this morning, there is still the
smell of maple syrup.  Is this a  problem that I shouldn't
be concerned with, or is there something else
wrong?"