I don't think they'll go for the partial, but in endless chatting to their customer service (AliExpress disputes must do something to the store like prevent them from getting money out or something as the open dispute seems to be really unpleasant for them) they got their designer to message me. He agreed the crank is 'too long', their solution is 2mm spacers D/S, 1.5mm Spacers NDS + 0.5mm from preload ring.
Obviously this results in a +2mm q factor both sides and a +2mm chainline which may or may not be an issue for you depending on how your chainrings and pedals are mounted or your fit.
Hope that helps those that keep it.