Alright it's done. This is a helluva lot easier way to configure the GH60, no?
num_rows = 5
num_cols = 14
strobe_cols = False
strobe_low = True
matrix_hardware, matrix_strobe, matrix_sense = make_config(
strobe_cols=strobe_cols,
strobe_low=strobe_low,
rows=[D0, D1, D2, D3, D5],
cols=[F0, F1, E6, C7, C6, B6, D4, B1, B7, B5, B4, D7, D6, B3],
device=firmware.device
)