I would look for a small Pelican case or something similar to put them. You are already using that space anyway. I would also look for a way to compartmentalize in order to maximize the space. Also, look at shifting things out.

Re-evaluate the entire pack and see if something needs to be removed/added. I believe Hacksaw and Taurus re-evaluate their packs about every six hours or so it seems.

Either way, empty the pack and rethink it.