Good news and bad news...

The good news is that both NES and Famicom port worked! The game's playable!

*screams like a 1955 Doc Brown on first seeing the Flux Capacitor*

The bad news is the graphic's garbled. > :P I know there isn't a short or loose connection but it's possible the combined length of 24" is too much for any signal to travel even if only one connector's used (it's 12" from one connector to the mainboard and another 12" from another connector..)

I'm going to have to double-check every connections (hears the ohm meter whining) and if there's nothing wrong than I may need to add capacitors to reduce the noise.