Not sure how to test Run/Stop. Maybe Reset the emulator and get to a prompt and then hit button 7. I think that should start the game loaded.

So player 1 fully works now? So what you can do if Player 1 fully works is to copy the settings for Joy1 to Joy2 in the cfg file and just change the first column from 0 to 1. That assigns it to the second joystick.

In the config, you just have to know the pattern as I mentioned in the previous post and reference the C64 keyboard map: