USB Joystick controls both Player 1 and Player 2

After consulting:

and

and

I’m still no closer to having a functional extra USB joystick or pad which controls player 2 independently of player 1. My USB joystick controls both players and the Picade joystick works properly on player 1 alone.

Has anyone got this to work reliably? I love the Picade but this is a very disappointing limitation.

thanks very much in advance for any support.

thanks!

Kevin