Not being very mechanically adept, it took me a while to fit the kit. Had to reposition the pedal sensor a number of times before finding the sweet spot, but working well now. Really enjoy the riding experience but would agree with other reviews that the battery capacity is a bit of a disappointment. Nevertheless happy with my purchase so far. Can’t comment on returns or customer service as I have had no reason to use either to date. Is conversion with Swytch preferable to purchasing a new e bike? I also have a VOLT which offers many more miles of cycling support but at twice the price. Very glad to have both options.