Not really into it tonight, so when I make a mistake I called it quits. I accidentally countersunk a hole that I wasn't supposed to in the W-413C-L angle for the W-413 aileron hinge bracket. Damn. I've emailed Vans to see whether I can simply use a 426 rivet instead of a 470. We'll see. Meanwhile, I fitted the W-414 aileron hinge bracket; had to re-do a couple of the rivets but otherwise went ok. While I was in a rivet removing mood, I also drilled out a few of the outboard wing skin rivets I wasn't happy with. When Derrick comes over next to finish rivetting the skin we'll re-do those ones.