Left Elevator Front Spar Install

Finished most of the rear spar rivets, solids along where the trim tab goes and pulled MK-319-BS rivets where the trailing edge is just like the right elevator. Got the front spar installed and clecoed in with little difficulty. Then per plans started the long task of getting the root rib, front spar and tip rib riveted. The front spar is attached to the E1008 ribs with LP4-3 pulled rivets which went quick. There were 4 tough-to-reach rivets where the root rib met the rear spar that took a lot of time to figure out. The plans acknowledged that by stating where access is tight a flat rivet set could be used on the factory heads of AN470-3 rivets instead of a normal cupped set. I'd never heard of that technique and did a couple test rivets with the squeezer to see the results. Sure enough the domed AN470 rivet head was flattened by the flat set but apparently this is acceptable to Van's. It would have been very hard getting the shop heads done on those 2 rivets any other way with either gun/squeezer and a cupped set. As expected they aren't pretty but they are airworthy. I then made quick work along the flanges of the root rib with the squeezer. I also ordered 100 more LP4-3 rivets from Van's cause I'm about out and no doubt will need more.