IIRC the IDEA of a cascade controllor just came up around then.my memory on time may be off ,but design had to be done. They where a idea that had to be made into working schemetatics,then build schematics,parts resourced, boards made & assembled and tested. you did wait too long,but what stage was the controllor in when you made the initial payment/order?????

As I said I didn't follow controllors closely.

When you ordered yours,where they in existance YET?????? or wear you given a expected date based on a "perfect problem free test phase" I just would like to know that.