I'm using a 1/3 hp pump instead of the 1/6 hp. There's so much flow that I didn't find it necessary to cap and drill the nozzle. The pump also creates enough pressure to reach the top of the "bev out" dip tube without restricting flow to the "gas in" side.
You can check out more details (pics and video) here: Keg and Carboy Washer
I've also blogged about some other homebrew projects.









