Counter sunk all holes and riveted with 426-4-6 rivets (the drawings say use a 426-4-5 rivet but after checking length I found them to sort for this application). The 426-4-7 rivet is the right rivet for PF-198. 135 solid rivets latter the right side is completed. I find it best to do all the counter sinking while the frame is in parts.
