Problem Solved
Introducing a new profile router bit, manufactured by Whiteside Machine Co. in the USA.
Now let's look at sharpening a chisel for one.
I take a cone shaped stone, Dremel, I think, it's about 3/8" across the back and about 3/4" long. I think
it may be called '5/16" Abrasive Point' but I also found one at Woodcraft,
Item #18N4D that would work just as well.
As for the drill bit, a diamond hone on the cut edge and your good to go. A very fine file will also work.