Can you post a pic ot the belt? I wonder what it looks like.
It's actually quite easy to build your own exhaust port, I have done that and documented it in my own pack#3 build thread, unfortunately, another picture hosting website has failed me and all the pics are gone. I have put so much time in these threads and I am actually fed up updating them, feel to lazy right now but I still have some pics and will post them here, just have to get to my computer to do that.