I had to drill a bunch of 5/8" holes in the table per instructions to be able to lay the Flap top-down on the table with the clecos sticking through the table. The Bottom Skin was Match-Drilled to the Ribs. David gave me quick lesson on how the read a part of Drawing #14 that was unclear to me - phantom holes beneath the Left Plate (FL906B). He wasn't actually here - we did this via text /photo messages.