Glad it’s mostly working. I’m curious about player 2. If you swap joysticks and then go into the menu, does the P2 joystick work to navigate? Have you tried to do a manual configuration of Joystick #2 like you did for Joystick #1? I think it may be a Pin ID issue, 1 0 0 1 1 8 may need to be 1 0 0 1 0 8.

Do the P2 buttons work? ie, warp, quit, save, load, swap.

Also, your last line seems to be weird:
1 2 3 1 0 8
It should be
1 2 3 0