I'm working on the KOTOR II version.
After a little bit of research, I'm pretty sure it's the pressure foot shank that's missing. Here are my pictures though.
This is the machine (A Janome New Home Excel 23L) with just a regular foot.
This is the machine with the attachment that was on it when I bought it from a neighbor. I'm pretty sure this is the darning foot, which would make sense why the shank isn't on there. Question is, what happened to the shank in the mean time.
Boots:
I'm trying to get one set of boots that I will be able to use for Admiral Daala and Visas. Daala can't have the stretch panels for even level 1 approval and level 3 approval you can't have zippers at all. I figured that I'll give it a few more weeks of research/stalking Ebay before I give up finding the perfect pair that will work for both. I really just wanted to invest in ONE pair even if it mean spending a little bit more money.