Whats the most efficient method for adjusting the throttle range on an ebike to optimize turning performance, and why do so many riders seem to struggle with finding the sweet spot where assistance kicks in smoothly without overpowering the bike? Is it a matter of calibrating the motor controller, tweaking the throttle sensor, or simply developing a better understanding of how the bikes systems interact? How do the different types of throttle sensors - hall effect, cadence, and torque - impact the adjustment process, and are there any specific factors to consider when fine-tuning the throttle range for urban riding versus trail riding?