Well, this looks a little disheartening. I can't believe you would have to hardwire a shift/alt button, but I'm glad I found this thread before I went down the rabbit hole. I'm currently using a controller called the iPac and it has a mode that acts like a keyboard as well as a mode where it acts as a USB controller. There is a keymap/button configuration tool and also provides a macro setting. I'm hoping this will be the solution because I don't like the idea of getting into a situation in the future where I have hard-wired macros and the software changes the way it works. Regardless, thanks for the thread which really shortened my research time.
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