A lot of assembly and disassembly to get skins aligned and ribs installed. Installed floor pans, hopefully permanently, and got entire assembly cleco'd together. Then match drilled #40 holes on the outside of the steel engine mount brackets. Then match drilled the longerons. Started to match drill the #30's on the top and bottom of the engine mount brackets. People have trouble with the edge distance on these, so I did my best to pull them in tight. Still, you're drilling blind and I won't know if it's ok until I take it all apart. Drilled the rudder block mounts in the longeron using the template supplied. 5/14: Finished match drilling the steel engine mount brackets today then started to disassemble everything, The moment of truth for the engine mount brackets. The bottom ones look good, but the top right is a little tight on edge distance. I would let it go based on what I've read online from other folks that had shy edge distance. Then revealed the top left and it has literally zero edge distance in the last hole. The hole clipped the edge - it's trashed. If I'm going to replace the top left, might as well replace the top right too. Ordered two new brackets. I since reread the recommendations from others to install and tighten the engine mount bolts to better pull them into alignment. We'll do that next time. Purchases: Vans - new WD-1002 L and R.