Hi Spikey, I am Christian from Germany. As you are I am a Submatix diver. You wrode at 16th January 2014, 08:42 to ReLic: "I have had a SUBMATIX series 100 for about two and a half years, now. I am very happy with it and even made some modifications to a new Quantum counterlung. This made WOB a little easier, improved trim and reduced the need for the top mounted weight pockets." That sound interesting. How did you fix the counterloung to the rebreather? Did you cut the case? Can you send a photo? Looking forward to your answer. Dive save, Christian