With all the thinking about drilling the cam sprocket to adjust cam timing, I ended up with a sprocket sitting here looking way too stock
So, poked a few holes in it for good luck.
Basically, I'm doing this bike in the spirit of the 50's Italian single cylinder road racers where lightness was as important as horsepower.
The good news is that I didn't have to be precise about it to use the holes for cam timing changes.