Must be rock season.
After 25,000 miles, I lost my first headlight glass to a rock this weekend, too.
This was the rock from hell, though. Took out the cover glass, the H4 lamp unit behind it, AND the parking light bulb!
There was a half-inch-deep pile of pulverized glass chips the consistency of granular sugar behind the bucket, inside the fiberglass shell.
I found Zen meditation useful while reassembling the world's most overly complex headlight mount. And I finally figured out a trick way to hold that black rubber gasket (between the trim ring and body) in place while putting it all back in the car.
So, both a religious and a learning experience.
And oh, welcome to our zany little club, Chris. That is one fine car you've got there. I got a ride in it while the five-speed was being set up at Anthony's.