OSTexo,

I think that's it but it's hard to see that the contoured "patches" match the existing contours when I see it as a jpeg.

Which of the suggestions from the post (or other) did you use?

Michael,

You are correct.
I want to be able to machine the cap blank with all the contours, then have the option of machining out various bridge/pickup combinations.
If the neck/tenon area is filled in to match the contours of the cap I can determine later whether to make it a set-neck, bolt-on or thru-neck.

Thanks,