I'm starting to get a bit more worried about the remaining members.  On late Monday/early Tuesday the 4th Amigo passed away.  I don't know the root cause of what's causing them to die off on me.  They seem to stop growing and then after a while show symptoms of illness.  The three remaining members appear to be healthy but not much in the way of further development.  

First image is of the remaining Musketeer and the second is the Two Amigos.