I am not taking it personally.  There is only so much I can to to truly determine the origins of an engine that I list.  In most cases I feel that for the most part I am able to get somewhat reliable info from the seller.  I know 250R engines well enough to usually be accurate in their descriptions, but the zilla engines are a different animal.  Trinity built a ton of zilla engines here in So Cal.  The Edelhall engine should have just been listed as an unknown built engine, but it was unique enough that I wanted to try to get some definitive information listed.