I bought a BMC Roadmachine with the X20 system in October last year and have since ridden some 6000 kms on it. When I got it the motor was very quiet and the motor cutting in and out at 25 kph was almost unnoticeable. Now the motor has a very obvious whine to it and the cutting in and out is quite audible. Has anybody had the same sort of experience? I contacted Mahle to ask if they had anybody in the UK who was trained up in their systems but all they could do was refer me to the dealer. Dealers have access to a dealer app to help them diagnose faults but the app won’t help with the issues I have and the dealer had no particular experience of them. I think the lack of qualified representation in the UK is particularly poor. I’ve no idea what to do next. I guess I’ll just have to suffer the issues I have! Or is all this quite normal?