I finally mounted my LL Bean Continental Rucksack to my DIY PVC pack frame. The Continental is a well made pack, but it has a tendency to pull away from the body.
L. L. Bean Continental Rucksack Review - Perfect Bushcraft Backpack - YouTube
The Evolution of the Legendary L.L.Bean Continental Rucksack
L.L.BEAN - Continental S Rucksack - Sea Holly Green Backpack | Casual Daypacks - Amazon.com