I've been worried about doing this all week. Turns out it's not so bad just 1/2 set every 10th rivet or so then go back and get the rest. Then you flip the rudder over and set the rivets with a flush set the same way except this time you set them all the way. I flipped the rudder back over again and bumped each rivet a couple of times with the rivet gun. I have to brag... The shop heads look as good as the factory head !
These are the shop heads. They look as good as the factory heads