Rob, It's funny how that happens... I usually fly my tanks worth, so most the
time I'm up the longest, there were a few times I knew that I was at the bottom
of the tank, and that very problem occurred, I usually clear, but stay right over
the runway and go up higher(Great Floater).. But there was this one time
there was a dead stick, I cleared and was heading upwards and I ran out, we
ended up coming in from opposite ends of the runway and we both just missed
each other.... It's always fun, and learning the different things that can happen
at the field

You know on the tanks, the 10oz is very little difference than the stock, on mine
it came out to about a half oz(I had to test it) So I would say not worth it, unless
you could fit the 12 in there....