Thanks for the reply Vortech. With those 75 variables ( is their that many that can be listed and measured ? )

I am trying to think about that business saying, Starts something like. If you can measure it, you can plan it. or something like that. A good nights sleep will leave me with the answer in the morning.

With those variables, do you do it manually or do you use a computer program. Seems like you are a fair way down the track.

Star.