I have the Stromer St-1 Sport Standard model. This model comes with a Throttle twist on the handle bars.....I have yet to figure out how it works....if anyone owns the same model as I do....could you please tell me the steps on how to make that throttle twist work? Love my Stromer except for this issue and support is almost impossible to find for the average customer. Does anyone know of a customer representative I could call to find answers to questions I still have about this bike? Thanks for anyone on this forum who can help me.