Okay, I got to it and put in your set up and I like it a lot.

However I am still having the problem of slot 3 and 4 not doing anything when I hit Shift-F3 or Shift-F4. However if I go to their respective window, I can click it with my mouse and each one will assist my main, set the target as focus and mark it with their corresponding mark.

I talked to Lax in chat and he didn't know why. I'm baffled!