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March 6, 2017 at 11:12 pm #145881
The conclusion of your arithmetic is correct.
One thing to consider is that the three switches are actually a special case of two switches (switch 3 is based on holding down both the others), so you can't just sacrifice one of them in exchange for a pedal.
Note that also using both a switch and a pedal on the H9 requires specific and correct wiring. See elsewhere for information.