Dan, no probs! I say that purely as the companies are trying to win contracts and wont help others which may ultimately take the job from them. As to the control, it was interesting that Otis still had tape systems which still ran pretty good, but our company(Otis bought out) went to electronic climbing with course reader, fine reader(reader on the governor) and then vane floor level control in 1978ish. The system was ahead of its time I think.