Quote - I've tried just importing the plain base figure (see screenshot) but there aren't any morphs to pick from.

I was going to answer this earlier, but I forgot to check with my installation when I got home, and Mrs. Bob wanted the computer, and... Oh, I'm just too late. Sorry. :( This may be really obvious, and I may be missing something, but the base figure doesn't have any morphs, other than JCMs and the expression morphs in the head. You need to inject the morphs you're going to use, then save the figure to your characters menu and use that in the Tailor.