Dimple the skin for the wing tip on the left wing. It looked there is not enough clearance to use the pnumatic rivet squizer, but it was just enough to do the job. I had to file off a little bit fron the side of the male dye. On the last hole on the top side I had to use the #30 pop rivet dimpling tool and slightly counter sunk the hole. Counter sunk the 70 rivet holes on the wing tip for the platenuts and counter sunk the screw holes to fit the dimples in the wing skin.