Van's replied to my email today to say that the stiffener issue from yesterday is a non issue. "Build On" was the message.
Tedium tonight... Drilled out all the holes in the skin for the stiffeners (the ones that officially need to be clecoed together and then match drilled). Per yesterday, I am counting on CNC fit to make things "just fit". History says that they will.
Next came manual de-burring of each side of each hole. At least it's done now.
Seems like some errors in the instructions for the next few steps on this assembly, so going to surf some other builder sites to see what I can see.
Total Time: 1.2 hours