I wish that it had a short 1 or 2 page pamphlet on how to adjust it, and what all the pockets, pouches, etc., were designed for.
I David Long's Public Land Mulies
, he gives a decent description of properly loading and adjusting backpacks. Pages 172-181 if you want to flip through it at the the book store without buying the book.
And on the packs, my wife and I (as well as most of the people I hunt with) have the J104 and are very pleased with it. Ebrelestock makes some very good equipment. And I take the bipod off when I put the rifle in the scabbard, I can't remember if it actually fits or not but it seemed like it would be a pain in the ass trying to get the rifle+bipod in and out, so if I need the bipod I just put it on when I need it.....otherwise I just lay the rifle across the pack.