that's how i came across my zippy lipos. Dan, the owner of Kersahw Designs bought a pair of the same packs you got only 25c and they didn't fit. he sold them to me for the same price he got them for, minus the crazy shipping costs.
They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.