BTW, when the chain comes off,
it's not when I'm shifting.
When the chain comes off, it's usually when I
carry the bike down the stairs,
then maneuver through the two doors.
Then just when I'm ready to hop on the bike,
the chain is off. When it was perfectly
mounted a minute earlier.
When I carry the bike, I'm not pedaling it forward.
So maybe it's coming off from the bottom, and
some kind of backpedal.
Very disobedient.
Go figure.