OK, I compared this roast (with no curve) to a previous roast that did have a curve.  So I went through and changed the selectors to match that other roast and in the curve selector area all of a sudden Behmor 1600 curve popped up, then I went up changed the profile, program, and weight to the correct metrics, and the curve adjusted to correct look as I would have expected from the word go.   

Does it matter the sequence of settings?  It appeared as though the weight was the catalyst for the curve to appear.