This is the insert which converts the travel pack into a camera pack. I made it with high density foam (an old sleeping mat cut to size), some felt from the local haberdashery and some hot glue. It cost me less than AUD$30.JAlbum 3.2
While it's not immediately adjustable with velcro tabs, I could have made it so with a little more patience. But why worry about it? How often have you rearranged your own pack? I've found that once it's in place, I leave it alone because I know where everything is.
Of course, I can always pull it apart and re-glue, but I'm not likely to any time soon.