The Energon Pub

First off, I am aware there is an entire thread devoted to identifying KO's, and I did look over it. I apologize if the answer I am looking for is there but I did not see it. Anyway, I am in the process of completing my G1 Predaking. I recently purchased Divebomb and Tantrum off ebay from a popular seller who shall remain nameless until I get this sorted out. They arrived today and I immediately knew something was wrong. The combiner parts were almost white instead of the gray they should be and they had that cheap KO feel. The swords were also gold chrome. From my research I am positive the combiner parts and the swords are from KO's. I believe the actual figures are authentic, they bare the Hasbro stamps and just have that overall higher quality feel. I'm not sure about Divebomb's wings though. They seem a little "cheaper" than the rest of the figure. Is there anyway to determine if the wings are from the KO? Any insight you guys can give me this will be greatly appreciated.