That's a neat simulator on your linked page. It's fun playing with it. But I still can't get your message to decode properly. Another hint, maybe?
The settings I'm using:
Walzen: III I IV
Ringstellung: K-11 R-18 Z-26
Stecker: BX CE GN IJ LO MY PR QT SZ UV
Start position: Tried "TJB", "KET" and "KIP". All gibberish.
Maybe I'm missing something? I'm no Colossus here.