Mitch,

Ron's question is the same that I was going to ask. Looking at your photo with the line templates, it appears that the blocks are almost in a tail dragger position! However, 5+" for the gear line sounds right - same distance as on a Tipo wing. Maybe it's just optical. In the second photo showing the blocks installed, they appear to be further back just because of the angle of the photo.

Usually, the CG just hovers in front of the gear axles (~4.9") - make sense?

Oh, I just realized that Don's cores are cut with ailerons included - that's why the gear looks so far forward.

David.