[Dons427]

Hi; I did exactly what you did, re; making the lower brackets longer.
The gap between the wind wing and the frame is now parallel at the hinged side, and it will not break if it is moved inwards.
I made all four blocks out of stainless steel. Now; I didn't have to chrome plate them.
The polished stainless steel matches the mating sheet metal brackets.
I believe that it is possible that making the upper and lower blocks at the same length was a mistake right from the start!

Don