Hey Paul:
Thanks for the help. So my tub is exactly like yours (I also have to turn 3/4). I am actually going to call the company about the swooshing noise tomorrow. I will let you know what I find out. I can't believe they would manufacture with this issue. I mean its great spa, but for the price I would expect perfection. It's near perferction but the noise is bothering me. I hope I can get it fixed, if not I will just live with it and turn the dirverter 3/4.
Claude