Picked up where I left off, placed all the rivets in one side of the rudder skin and then used the special rivet tape (sticky on left and right and not sticky in the middle) to hold the rivets in place. Then flipped the skin over onto the backplate for back riveting. This was pretty easy and I ended up with fairly consistent rivets except for a few of the ones near the trailing edge which gave me trouble. They were so close into the trailing edge bend that when I pushed the top skin back to get to the rivet it pulled the skin up off the backplate and I would end up with a bad rivet. Drilled out about 4 of them and got them all corrected.
Using the Rivet Tape to hold Rivets in place for back riveting
On the inside the rivets are popped up so I just slid the stiffener over them and used the back rivet
Ended with the stiffeners secured with good, consistent rivets
