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.
LL Bean Continental Rucksack - Best Affordable Bushcraft Backpack! Review & Women's Fit - YouTube
L.L.BEAN - Continental S Rucksack - Sea Holly Green Backpack | Casual Daypacks - Amazon.com