I'm still waiting for my new "D" drill and 0.2470 reamer. In the mean time I thought I'd try to at least start the assembly.
I made the spacers out of the metal provided and clamped it and the angle to the attach block. I updrilled both holes on the piece shown to the dull "D" bit.
Now I really need to get the new drill and reamer to finish this piece because I won't be unclamping it until the holes are sized for the bolt.