I didn't know at the time that you missed 13, I thought you managed to ace me on it while I wasn't looking (or while I was looking for it in the wrong clearing). I had the same trouble as you with the train. The cars kept going off the rails.
Additional karma was teasing Kathleen last week after she mispunched. I think this was the first time I have skipped a control, and last year at the same park was the first time I punched an incorrect control.