Helper #1 and I made a very good effort this evening.
We fitted and drilled the junction for HS-404, HS-405, HS-710, HS-714. I am very happy with the way it turned out... the edge distance is really good. I did not drill it in the exact sequence as stated in the plans... I used the HS-404 to determine edge distance instead of doing everything in reference to HS-405. I think is turned out well.
I still need to clean up the edges and make sure I have recommended clearance around HS-404 and the HS-710, HS-714.