@chicgamer: Also, check and make sure that you have installed the jumper at JP2, as this is the chip select for the digital pot. Somewhere around here I did make a test firmware that cycles the pots back and forth, ignoring the thumbsticks entirely, and that could be one way to diagnose whether your issue resides with the digital pots, or with the thumbstick. If you're interested, I can dig that up.
@animan99: I just got a 3D printer and printed your case design yesterday, in PETG. A little bit of an issue with nastiness around the supports on the beveled edge (I'm trying a PLA print to see if it looks nicer), but nothing some sanding couldn't clear up. Great design, and thanks for sharing it!
Scott