I'm having a draw bar made for my Pony. Based on the brackets, which I have, I know the O/S dimension of the bar at the point of attachment and the positioning and size of those holes. But since the Agco parts book does not provide dimensions, I'd really appreciate some measuring help from someone out there that has a post-1950 draw bar. I've attached a drawing, and the dimension I need are indicated as items A-E. Also, if you can give me the approx angle of the hitch bar at point of attachment and the dimension of the holes in the hitch bar, that would be fantastic. Finally, what it the thickness of the steel?