Getting farther along in the carving of the firewall:
The wiper system is designed to fit kind of under the front edge of the windshield. The firewall is getting mighty thin in a few places. I will have to fill in up under the dashboard on the inside. I'll need to make room for the levers and arms. The cranks on the worm drive does full circles, and the 'reversing' arm just opposite the motor rocks back and forth, and the arms at either end sweep back forth.
It is hard to miss the lovely globs of spray foam - this is with some tape to try and hold the wet foam against the back of the 'A' pillars. I now will have enough material to cut the area to drop the windshield flush.
Tomorrow looks to be mostly a wash - Hurricane Arthur is coming relatively close by later in the day. We may get a lot of rain.