Using the wiki, I figured out that LE was using the keymap for tanix_tx5max for my Android box, copied the file from /usr/lib/udev/rc_keymaps to /storage/.config/rc_keymaps, figured out the keycodes using ir-keytable and edited the keymap file. Everything works.
I copied this keymap to a file with the name of my box, changed the name field to match and created a simple /storage/.config/rc_maps.cfg with the single line "* * path-to-new-keymap" but LE still wants to use the tanix_tx5max keymap. I'm curious as to what else I need to change to get it to use the new file.
Thanks