For reference. Here are some side by side comparison pictures of the 1969-71 #7036 handle and the 1972 and later bolt in #7926 handle.
As far as length and bends. I don't see and difference between the two.
Hyoid are right, No there is no difference between 72 and the 69-71 in terms of bend. The 68 is a sharper bend more like 90 degrees. Maybe they realized it was too sharp a bend and redesigned it for 69. Who knows.
