I just remapped my buttons to control fwd/back up/down left/right and discovered a frustrating anomoly. I wanted to use a dial for up/down placement but found that as soon as I had mapped an anologue device to the up/down my left/right and fwd/back switches stop working. If I disable the analogue of the up/down they come back again.
I hope this is an easy bug to fix as the up/down works very nicely with a rotary dial.