Terry,
That's cg calculator is cool. I have saved it to my favorites for latter use.

Since the Shrike has a wide center section and both the cord and span of the root section is considerable larger than the wing panels, it is a little confusing what figures to imput. Would you consider the "root" measurement where the center section touches the fuselage?

Or, would you just imput the measurements of a wing panel and disregard the center section?

Of course it has a forward sweep so I assume you would enter that amount the same as a rearward taper, correct.
Thanks
Paul