With this mess with traditional games, say, Final Fight? Or only other spinner games?
Launch the game and press TAB to bring up the menus.
These menus will only change settings for that specific game ROM,
unless you change something in the "Input (general)" part of the menu.
If you mess a setting up and want to take it back to default, select the setting and do this:
For slider controls like "Dial Digital Speed" that have a number
- Press Enter (returns it to default)
For programmable inputs like player buttons
- Press Enter (lets you program the setting)
- Press Escape (sets it to "none")
- Press Enter (lets you program the setting)
- Press Escape (returns it to default)
Have fun playing.

Scott