Perhaps that's part of the issue. The group dataset I'm trying to visualize seems misaligned to the HaskinsPeds T1.nii and *.spec file. Maybe the group data needs to be regrided?

I'm visualizing using AFNI+SUMA:

afni -niml &
suma -spec ../../ref/HaskinsPeds/freesurfer/HaskinPeds/SUMA/std.141.HaskinPeds_both.spec -sv ../../ref/HaskinsPeds/freesurfer/HaskinPeds/SUMA/T1_new.nii &

*Press "t" to get AFNI & SUMA to talk...

NOTE: T1_new.nii is the output from

3drefit -space HaskinsPeds ../../ref/HaskinsPeds/freesurfer/HaskinPeds/SUMA/T1.nii

I've attached a few screenshots to visualize the misalignment.