I am NOT EXPERIENCED with prints, but unless I'm missing something, can't you just go to Home Depot and have plexiglass sheets cut the same size (or an inch bigger) than the prints then put them in a container with water and stack the prints print/plexiglass/print/plexiglass/etc/etc...
Leaving the container filled with water?
The plexiglass would prevent excess movement and is less pressure than glass, and would keep them stable?
Or am I totally off base here?
Can you also leave them to dry there and go back the next day?
Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk