Bumper,
When I discovered no air was getting out through any of the tail assembly
in my 24, I simply made a 11/2" hole over the drain hole in the tail wheel
fender. Ahead of the fender is a bulk head that has a nice large opening.
The standard tail wheel leaves enough
clearance around the fender frame to allow air to be sucked out.
The only disadvantage would be if you land in a muddy field.
That is a trade off I am willing to make.
Regards
Udo