Stock racks...what do you use?

[DaveH]

I'm a long length of 40 x 3 angle short, so I was trying to use what I have. For the two sloping angle irons I thought I could use 32 square tube, fixing it flat on, but it ends up skew because of the thickness of the angle rear frame. Altering the design a touch will get rid of the skew but then the angles that hold the shelves (the 6 outer ones) are skew.   
I could 'notch' the tubing - not the best thing to do.
So I'm still in the 'thinking mode' and it is not going well  
Also I can't quite see where the top angle iron goes is it fixed to the rear angle iron or to the sloping angles?

But apart from that it's going like a Boeing   
   
DaveH