They dont want me to return it as they say that is user issue. Im not dumb but they still think is air in the hose the problem itsnt they also think could be dampers y changed them for some new, also changed the cables.Is your first photo of the new head as that doesn't look new and the head rank sticker isn't genuine
(The one of the left)Also some more photos of the head you have bought as it doesnt look like it is new. If it was the code on the packaging should match the code on the head