Is a little tough to believe, checked some sources and what they told are just starting to distribute them around the world, tough but possible...

Can we see a photo of it? Have you tried to disassemble the high speed assembly, could be a little of dirt inside it. If you do it, close them completely counting the number of turns, just to have an indication of how much opened is the HSN, think that previous experience with it is zero, so no one can tell you how much should be opened that needle.