I got into too big of a hurry after repositioning the spar to drill the last bay of rivet holes. I forget to check for clearance of the drill bit across the web, and when I slid the drill into position the spar was just a hair too high, or the drill bit was a hair too low....it put a nasty scratch in the web. So I took a lunch break to decide whether I need to start over with a new web, or assume I'll be able to polish that scratch out, and go ahead with fitting the rib attach angles.