Here's my first draft of what I was talking about in the 3rd post in this thread.
BigBen2K, you wanted a design that doesn't interfere with the jets - then just wait 1 week and I'll show you a working design. Already got it mapped out and on its way to the machinists.
This current block performs within about 1.0C of the White Water and I know how to make it go a lot better.