Riveted Tops of Aileron Ribs

I'm hoping to get the ailerons and flaps completed this weekend, so I got started tonight by squeezing the rivets on the top side of the leading edge and trailing edge ribs.  The next step is to weight these down to a flat surface before putting in all of the rivets on the bottom of the aileron.  My benches are not as flat as I would like, so I'm planning on using our kitchen countertops to do the final riveting.  It's too late tonight to start that, so I'm done for the evening.