Gary,
I have an idea... a good one, at that..
We talked about drilling a .030" hole in the restrictor on your fuel return to restrict the fuel flow. I figured out how you could do it.
Take Tom's brain and lay it inside the restrictor to measure the opening. If it falls through the hole, then make if .005" smaller. Repeat until the desired opening is reached.
The only problem is that you may need a laser by the time you're finished to get to make a small enough hole. :P
If that doesn't work, and the hole is still to large, you could also resort to other parts of his anatomy.... but I won't go there...