I have looked closely at both domestic and imported windshields and found what I considered a major difference between the two.
The domestic unit was finished out nicely and all, but the four side mounting screws on each end were surprising short and utilized a National Coarse thread. When cinched down, it appeared that only a couple of threads were engaged.
The English unit was even more finely finished, but more important than that, the same mounting screws were longer, utilized a National Fine thread, and they engaged the frame much deeper (maybe 5-6 threads). That clinched it for me.
Bud
