Almost immediately after posting this I remembered how to test it. I went in to cabal and set the mouse option for players 1 and 2. It appears as though MAME sees the trackballs and spinners as mouse 3 and mouse 4 for some reason. I just need to set them in my config file.
Hopefully this will help anyone else who might encounter this.
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Re: Opti-Pac Not Working In MAME / Win 10
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