Almost completed the right wing sub- structure minus 6 rivets that i ordered a rivet wedge tool to try and get to as i cannot pull them in the location next to the spar channel. This was an interesting part of the build where things are finally starting to look like really wings, It tool a little planning to drill both sets of ribs as they shared holes so you really had to go back and forth between them and being selective with which holes your drilled out i tended to drill the outside holes leaving the two center holes for alignment of the other rib in the smaller cleco size and then using smaller clecos with the larger holes to hold the now aligned ribs as a drilled out the already large holes to match on the new parts. This allowed for both ribs to be drilled without compromising alignment. With the new swivel head rivet puller i was able to get the last 6 rivets but i also noticed i had 3 bad rivets i need to drill and redo when we get back to building. The rivet wedge will also make those hard to reach rivets less dicey as even with the new rivet puller it was still marginal at best for being able to put enough pressue on the rivet head all though they both pulled cleanly.