Wind Wings on 427 Cobras

[Dons427]

Hello to all:
I own an ERA 427 Cobra and I noticed that the wind wings made by the after-market do not mount, or function properly. The lower mounting blocks are the same length as the upper ones, but they should not be.
The windshield frame is wider at the bottom, and the centerline for the four holes to secure the glass is parallel to the front of the frame. Two of those holes are used to mount the blocks.
The result of having the same length for the upper and lower blocks is there is a 1/4" gap between the wind wing glass and the windshield frame at the top, but a 1/4" over-lap at the bottom. If you move the wing inwards; it will strike the frame at the bottom and break.
I found a pic of a original Gulf race car, and zoomed in to see a proper gap all the way down, and the lower block is longer.
I made new lower blocks .510" longer, with the hinge pivot hole .510 longer also.
The result is; it looks and functions like the car in my photo, with a parallel gap.
It would appear that the designer of the after market mounting kits made all four blocks the same length of .970", but maybe should have made the lower blocks 1.480".
If this is true; almost every replica has the issue, no matter what make of replica it is.
Do any of you agree with me?
My car now looks and works much better.

Don Cyr