I'm a newcomer to ebikes and I chose, as a "starter" bike, the budget level Carrera Vengeance, which I've had now for two months. First impressions are good; I have found it's hill-climbing abilities amazing. It has three levels of power; I find I rarely need levels 2 or 3. Level one gives a huge surge of power up to around 10mph, seemingly regardless of which gear I'm in, how hard I pedal, or how steep the gradient. However, this means I do have difficulties with low speed manoevering e g on "shared" paths or on rough tracks and, in these situations, I find I have to turn off the power assistance completely. Is the the norm with ebikes?