The distance between tank and the eclipse 40 lbs wing seems rather shortly. The knee of the inflation tube colides with the shoulder of the tank. So the wing shirks into my neck when inflated fully. I use two DS4 on a 12 l steel tank with aircon multi valve.
Also the hoses which cross (backup-regulator hose and inflator hose ) dent the wing.
By the way what is the right height of cylinder mounting. Do I have to feel the first stages when I recline my head fully?
Maybe you can have a look at the photos I took.
http://www.flickr.com/photos/21299277@N00/
I am grateful for any advice.