Home Page Ignoring "More…"

I am trying to use jumps on the front page so posts show just a brief sentence or two. This functionality is working elsewhere on the site but it is not working on the home page (http://blog.calumetphoto.com).

So even when posts include wpmore “more…”: http://cl.ly/image/0y3d3O2x0k31

They still look like this: http://cl.ly/image/0y1H1l3s1x06

Has anyone else experienced this and found a solution?

Thanks!