I’m a relative newbie on here so forgive any lack of protocol. I have a Riese and Muller Tinker nuvinci as my main bike which is great but expensive! I recently bought the above Wisper from a Pedelecs member for use at a cottage on Exmoor. Lovely bike and v low mileage etc and the bigger battery. However I am finding the front motor v noisy under load esp when accelerating from off I. It’s fine once pedalling at higher speeds. . Before I take it to a dealer for a look I wondered first whether this was normal and second what I might do about it. In every other way it ticks all the boxes for me Thanks.