Typical ARF construction. So far have put together five (5) of
these U-Can-Dos (two for myself - love this model). Anyways,
you do need to stand this fuse on it's nose and pour 30-min
epoxy down there and make a fillet all around the firewall and
fuse sides (do plug up those blind nuts with vasoline first).
Then after all has cured, simply retap the blind nuts to make
sure a nice little hole is cleared out thru any hardned epoxy
that may have creeped over the blind nut(s) area. Simple, but
strong. Have way over two hundred flights on my first plane(with
OS91FS); second plane has a Saito100FS with just six flights
so far. No problems showing up with firewall. And yes, I also
had problems with landing gear block. The cure there was to
saw out the original block, and get in there with some hardwood
filler all around and epoxy things back like they should have been
done in the first place. Those people constructing these ARFs
with hot glue need some lessons in model building (but then I
do realize that time is their main concern, not in our best interest
though).