Ok, next step is to install the riblets on what is going to be the aileron:
Next, that rib that I mentioned is too high needed to be adjusted. For this I used a sanding bar with sandpaper just in the middle so I could sand the rib without affecting anything else:
Once the rib is the proper height, the upper spars are put in place. I was still really trying to use wood glue at this point, so I had to weight the ribs down in place: