I got all the ribs updrilled and deburred and I just could not leave them like that so I had to start some riveting. I got the forward edge on ribs 5-12 riveted to the main spar. They were all CCP-44's so it was rather easy. Using a wedge made out of scrap aluminum made the job fast and accurate. I used a 1/8 LOOONG drill bit to make all the holes to they were very tight around the rivets but that helped keep the heads flush to the surface. They all came out very nice, I am very happy.