@Machinerguy Thanks for reaching out!
Wow, it's been a while since REI made an external frame pack! If you're able to upload a picture we'd love to see it.
We recommend working with Rainy Pass Repair for the replacement of your hipbelt. They do comprehensive backpack repair, including hipbelts. You can find their information on our REI Repair Services page here.
Hopefully this helps, thanks!