Hi I'm new to the forum and the ebike world. I recently picked up a new Fiido D2. I was originally going to convert an mtb over but money is tight at the moment. The fiido is an ok bike, I've already replaced the dodgy cable brakes with some hydraulic ones, and also added a separate more accurate voltage battery display meter. I have one problem and that is the pedel assist, it's slow and has no higher settings, unlike the updated D2S model. Can I change this or will I have to replace the entire controller and display?