Hi,I have just bought a new cross scity e bike.This one is identical in appearance to my 2020 city bike that I have . However the motor output power is very poor compared to my first one It is loud and wines all the time.The slightest of hills make the motor labour and having to use a lot more battery power.The motor is a different make.Does anyone know if my version has had planetary gears fitted inside the motor that makes is wine.My first one is almost silent.Thanks