Today was totally focused on the ailerons and flaps. We completed match drilling to the bottoms of ribs, after attaching the needed attachment brackets. On the left aileron match drilled and deburred to the spar. One of the most time-consuming things was to make sure there was no twist. Lots of measurements and shimming. Thankfully, we had the sandbags from before + I had brought another down. We transferred sand to gallon zip-lock bags so they were lighter.