All three holes in the closeout tabs should be dimple countersunk. The fwd two, to receive the dimples in the shear clip, and the aft one for the for the flush rivet.
A future plans revision will address this.
Maybe a Mod. could move this thread over to the plan gotchas thread?
Any opinions expressed in this message are my own and not necessarily those of my employer.
RV-6A (aka "Junkyard Special ")