I am out about $15 because I copied my own originals to put on the building board so as not to destroy my originals (to facilitate future repairs). Not the same thing but how can one be sure when buying plans from some one that they are original? I now must suspect another set of plans I have a ZDC3 that I bought that are black line. I guess the answer is to only buy them from the source. I had assumed they were original because I paid nearly the same price as if I had bought them from Nick. I did ask if they were originals and the answer I got was "I have not copied them" but I did not ask where he got them. His reason for selling was, the plane was just too big for him to accomadate.