I have an original production run 2015 Rad Rover. I have had some issues and I need to replace the motor. I have been told by RAD that I will need to install a new Controller, Headlight, both left and right brake levers, Display, PAS sensor, Throttle, Motor, Wiring Harness and a new battery and rack. I can understand the need to replace some of these things given changes in plugs etc that may have taken place over the evolution of the bike, but some of this sounds excessive. Has anyone replaced a motor on one of these bikes, and if so, did you experience any issues? Did you do the Bolton Bikes upgrade or simply replace with a RAD supplied motor? Any help would be appreciated.