I'm a newbie to MYOG so bear with me:
I have a six moons starlite that I love, but after about 1,000 miles of use the shoulder straps slowly loosen under even moderate loads. I think it's because SMD used 3/8" webbing instead of something beefier and the plastic locks have worn out. Otherwise I love the pack and it's in great shape, I recently picked up the smaller swift and don't want the same thing to happen.
How difficult would it be to replace it with 1/2" or 5/8" webbing and the new larger plastic lock? Would I just undo the stitching and swap the webbing and plastic locks? Would undoing the stitching weaken the underlying fabric?
Thanks!

