Yeah, I couldn't help myself.
I'm still chipping away at notching the guide rail key ends with the Dremel tool; slowly, but surely. Yes, I am a Dremel tool warrior.
For once, I'm glad one of my tools is not cordless/rechargeable.
You can see my progress in the photo above - 17 down, 34 to go. It shouldn't be more than a few more days and I can start sanding the sharps and getting them glued to their respective keys.