I never liked the vertical enter key (field exit). After popping off the key, I tapped rubber mat in the upper empty barrel, and lo and behold, it registered as the back slash key on hidlisten. After a quick visit to the Unicomp website, I got a full set of keys and did the full ANSI mod. I had to take apart the keyboard again to move the hammer from the previous back slash key left of the field exit key to the ANSI position above the Enter key. I also got a hold of an extra stabilizer insert for the horizontal Enter key.
I tried to edit the original post, but for some reason, it won't let me add the picture.