Despite the lack-luster manual, I've managed to figure out my way around the menus using the hand-mic, and also how to load in custom repeaters through the OEM CPS / Chirp.
BUT, what I haven't manage to figure out is how hand program in a custom repeater into Ch. 31-39 through the menus. Does anyone know, or could point me in the right direction? I'd like to know on the off chance I don't have a computer readily available.