This problems sounds pretty complex but any time a composite stops away from a floor and won't level into one, that sounds like a typical CS lock up problem when CS relay pulls in and self holds, your stuck and with no door zone relays in, your stuck with the doors closed. I would change all leveling inductors and the selector micro card. I know, sounds like a shotgun approach but that is the most frequent of this type of call. Unless, you have an open traveling cable wire which is possible, when the constructors hang "heavy" travelers, this happens when the steel core cable cuts through the wires slowly over time that are near the center of the TC.