I ordered the lower mast assembly and it fits PERFECTLY although the little plastic clamp on the mast isn't exactly the same shape. Still, functionally identical.

The blades for the XRB Lama, however, are Styrofoam whereas the ones that came with my model look like they're styrene (MUCH stronger). The Lama blades disintegrate if they touch anything and the styrene ones will take a bit of a beating before they become unusable.

Anyway, I'm making my own styrene blades now for about 20 cents each. I've posted some info on this elsewhere in here if you're interested.