If we know that the scale is structured as a perfect curve than I believe it is necessary that the curve is completely determined by our range of scores. The curve cannot be predetermined, nor can it be dependent/sticky from any previous LSAT curves.

Well, that's kinda right, and kinda wrong. I can't explain it well though, because it'd be like trying to give an exact determinant of the index equations of a school. Again, this is an educated assumption, nothing more...

BTW, I like the other scale the guy posted. It's just as accurate as mine.