Thanks very much for the replies. Sorry to take so long to get back to posting more information. I got carried away testing several different configurations and options for scanning a full head. For now I have yet to still have any luck with the import camera function.
Shortly after I posted originally, I took these 3 photosets and made a .psz (linked here
https://www.dropbox.com/sh/qdot7f6t1hkbrp8/H-R7l4xzLq). The photosets were taken consecutively and the parameters should be the same. The set with the colorful tube in it is my calibration; I have been able to get this tube to stitch together even when I was trying to go the full 360 degrees around. The clean-shaven man's photoset also aligns without much issue. The photoset of the bearded man does not align, and I have tried importing the camera positions from both of the other photosets with no success in aligning the bearded man's photoset. Am I missing something?
Does the alignment for every photoset already have to have a certain quality?