Thanks Steve. I'll give that a try.

:: Hey Bryan,

:: saw this old msg so you may have already resolved your
:: problem but I know of a couple of options for you.
::
:: 1) you can buy a rebuild kit from west marine for $23 -
:: G400sk
::
:: 2) reverse the flap valves in the inlet and exhaust
:: lines - $0 (they may have taken a set position open from
:: the mating surface)