I thought the first DLE engines were copies of a DA engine. So it seems par for the course for the Chinese to copy the copy too.  But it seems the issue might be more cloudy though. Some people have reported getting engines with a mix of parts that make them look like a partial copy or something. Plus they bought the engines from reputable dealers too. Then when I looked, does a carburetor with a DLE logo mean it is a fake. Does having a engine with shiny prop screws but everything else looking Ok mean it is fake?  So it might be a rather muddy issue trying to determine if one has a authentic or fake engine.  I would assume buying the engine from a reputable source would tend to ensure it is real and not a fake.  A questionable  seller can use real pics of engines and ship the fakes of course, so pics on a auction site or other internet store may not show what a buyer may really get.