Hello @crashdown
I have the Octopus Max EZ working fine im my voron 0.2 (that i was planning to transform in a fzero, that´s why this board). I have this problem with spi when commissioning, and figure out to solve.
First, connecting the adxl like the datasheet says, broken the spi communication.
The way i solved was looking at the jumpers and setting then strictly according to board´s datasheet, even in the slots that you´re not using (without drivers i mean).
If you could send a photo of you board setup, I can compare with mine (i´m new here, and in the learning curve).
And sorry for any english errors…
Cheers from Brazil