Double posting here. The previously reported issue is not actually an issue, but rather, simply a quirk of RUL0--the entries in a given RotationRing must all be of the same length, or else weird jumping effects occur. There were twice as many options that needed to be covered with the OWR situation, due to the unidirectionality of the network, so the full range of the piece had to be split between two TAB entries. Hit TAB again and you'll get the North-South orientation.
-Alex