Thanks for the detailed description of just what's going on, and the ini. Made finding both issues pretty easy. I've found both bugs and fixed them, so hopefully it will work now. Try the attached version (As I'm not sure it'll work and I changed nothing else, not going to make it an "official" release until it's been tested).
Edit: Also, just out of curiosity, do you need to invert the vertical axes for them to work correctly?
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