It's quite correct that Carey's latch system is superior to the one in Wolf's diagram. I have the latter. My car is old but when I bought it in Idaho it had only about 8,000 miles on it....and they would have been pampered, good weather miles.
While heading East homeward at highway speed in rain, the rooftop would try to lift like an airplane wing, the header bow would suffer from upward pressure and the lips of the clips ( like that one ? ) that hitch onto the windshield frame would move inward a tad and let the header bow would bend up a bit in the middle. Plenty of water would come in quickly. The quick cure was to stop at the nearest Home Depot and buy a clamp to hold the center of the bow down to the center of the windshield frame and thus the bent metal center clip idea came to be. Chrome the bugger if you must. :-)