Analyzed my splits a little. I already knew about my mistake on the first control and knew I lost about a minute. Losing two minutes each on both 13 and 14 because of route choice error though is incredibly frustrating. The quality of my thinking just wasn't high enough. My pace was actually very good for all the other controls, but I didn't take the necessary time to plan enough when it mattered.
1: We've read corridors many, many times in training. I tried to read the green directional forest coming in from the left, and somewhat succeeded, but that feature isn't nearly clear enough, so I went through that small light green patch soon after the start. I know the accuracy of the mapping is by far high enough for me to be reading the forest to my left and taking the first proper opening I see. After I backed out of my mistake, I knew I'd lost a minute because the runner after me was hitting the start. From there, I read properly and entered the control without issue. Not enough focus heading into the first control, and I should know by now that I should be reading the corridors, as that has been one of my strong points in training.
13: I wanted to run through the green directional past two, but ended up in the corridor to the right exiting control. At this point this leg is perfectly salvageable, but I struggle to find the trail and end up on the other side of it. A little bit of time lost there. Much, much more time was lost in the second half, though. I should have taken the trail all the way down, used the trail at the bend, at the control would have been easy pickings. I read the yellow corridor that's a little more direct as much more runnable than it actually was. This was very low quality reading from me and resulted in extremely slow running. Two minutes lost. Looking now, I think a more viable route is to pop out to the right to the trail and basically trail it right up to close to 13. Quick running and I can read the mess that is the next few controls on the way.
14: I still need to get a copy of the map and Quickroute it because I'm not confident about the series of events that led me to screw this one up. I started out alright, hitting the open area, but the corridor is blocked off by a a dark green strip. This isn't too much of a problem, you can punch through it, but something went wrong before that. The main issue I had on this leg is that I didn't develop enough of a plan for what is quite a complex leg that has more green than is tasteful. I came out south of the control and struggled to relocate, but managed. I spent a lot of time in green crap though and lost a lot of time.
15: Adding this one as a bonus. I tried to bust out to the open green on the left of the line but got held up by dark green. I think I missed the corridor to the right because I remember being in an open area with the oval-like shape to the south-west of 14. Everything else about that leg was fine.
Main takeaway: More high quality thinking, reading, and planning, make the routes easier for yourself.
I can basically sum that up to 'more clarity'.