Thanks Michael!
That was the answer I was looking to find. The percentage of the conic height thing. I can now continue.

I very much appreciate your help on this.

BTW: As I was fooling around with this, The Conic Curve in MoI, at an rho of less than .5, will produce a curve with 3 points across the top. The middle point being "on" the curve (Not always). If I follow the tan of the first two in relation to the top outer 2, it meets at the point of the usual third one. This threw me for a second but your explanation has lightened the room a bit :O