MRI registration problem

Hi, Francois,
Thanks for your kind suggestions, and after I warped the template for my participants, the results looks much better now.
Now I'm going to do the group analysis, and I noticed that in turorial you suggested to do the subject coregistration to reproject the sources of all the subjects on the default anatomy. However, for my study, I don't have individual MRI data, but warp the templet MRI based on the digitized points, do I still need to coregistartion them?

Thanks in advance!
Best,
Qianru