Cal,
Check out focusingscreen.com. They modify existing screens so you don't have to.
The one I got for my D3 was the Canon Ec-B if I recall correctly.
NOTE: I just checked the site and under the D3 section, they no longer have the Canon screens but under Df they do. If you buy the screen yourself, it is a very easy mod where you simply file off the tab on the screen very carefully.
Good to hear you got your Noct-Nikkor back! I'd like to shoot a few frames with that on Sunday. I'm bringing my "new" (to me) F2.
Speaking of my F2, does anyone out there have a D screen for the F2? I'm needing one to shoot my 300mm f/4.5 without the split prism blacking out.
Phil Forrest