So I think I've found the issue. There is a hairline crack right underneath ARPEGGO SW4 in this picture.
https://www.dropbox.com/s/avkgfs2md4us07f/IMG_6570.JPG?dl=0I was going to replace all the switches in the board and noticed this. I'll test continuity and try and jump any missed connections. Does anyone have any other suggestions how to tackle this?
Sorry I'm posting from my other account.
-cufflynxinc (jhatzia)