Keyforge Deck Box w/ Sleeves - Fixed

Fionawhim made a fantastic deck box, and then made one with sleeves for others. When I went to print the box, I noticed something very, very wrong:


Great walls, nonexistent backing. Not wanting to be deterred, I figured a few fixes wouldn't go amiss.

Edit 02-02-2019: Added v2.1, which adds a 20mm hole to the backside of the deck box. Makes it much easier to remove stuck cards!