Hi, Kara-
Hmm, I actually noticed something like this with another dset that I had recently processed; would you mind uploading one of these subjects so I can check it out? I don't think the "push to edge" will do anything; I think it might have to do with the coords/origin and FOV of the original dset. (It happened specifically when using the TTN27 template, as you are using, and not the MNI one-- not to say that you should switch templates, but more that there is some quirk here.)
I will PM you instructions for uploading an anatomical, if that's cool.
--pt