I regard your building the Edge 540-1.5 very interisting.
I look everyday in this thread.
For making a carbon cowling for the Edge 1.5 we need a negative form of the cole.
We have no and therefor I cannot built a carbon cowl for the Edge 1.5.
is a guidance for making a carbon pices.
I think your balsa cowl is good for your Edge 1.5
I wish you much succsess for yor Edge 1.5 projekt.