What do you mean it gets to the top and keeps running? It should hit the top directional limit, stop, level down to floor level and status in IMS should come off "Selector". Are you saying it hits the stop ring and keeps running in relief? The directional limit magnet is on the back left side of the tape. The magnet should be South (yellow) side out and start 5/8"-1" above the top of selector mark on the tape.
