I recently found a Gregory Cassin so I began searching for info on the internet. The pack doesn't have a center back cushioning foam pad on the rear panel up above the lumbar padding. The strip of sewn-in Velcro for adjusting torso length is what you see but nothing to cover it. Did they come through like that? Mine has 2 side access opening's to the main compartment so I think it is a later year of production. Also, do you know the last manufacturing year? Thank you most kindly!