Hi,
In looking at your pictures, I'm wondering if you have installed the metal pipe yet. In most of the BD-j5's I have seen the exaust end on the Jet have been cut since the pipe is not designed to go all the way to the end. As an example, stop the video in front of you when the Jet is talking off and you can see what I mean.
http://www.youtube.com/watch?v=AbK9N_BlALM
If this link doesn't work, I'll re-sent it.
Doc...