man, i am really careful about any kind of track, always taking it at least at a 45° angle. sometimes i'm comically too careful about it.

i saw a cyclist coming to a stop the other day downtown, and he had pulled up to the sidewalk, about to dismount when his front wheel stuck in a sidewalk track and almost flipped him over. he had a bunch of stuff on his person that all came spilling out on the sidewalk before he caught himself. "not the phone!" i thought. crash. yeah, the phone got the worst of it.

a metal file comes in pretty handy for that... and maybe some 3m 600 sandpaper.