Hi...I know the 3dr specs say that the X8+ uses Sunnysky V2216 800KV II motors....but the original motors on my X8+ and the spares I purchased direct from 3DR do not have the same motor case shape as the Sunnysky motors I found online. Does anyone know why the motor case difference? In attached pics....the motor WITHOUT Sunnysky logo was purchased direct from 3DR. Both the top and bottom of motor case differ from the official pic of Sunnysky motor. Reason I am asking is that I have 60+ spare motors that I purchased direct from 3DR when they closed out the X8+ inventory back in December 2015 and I want to sell them. Thanks!