My one year old Breezer Beltway 8+ (Gates carbon drive, eccentric bottom bracket) is starting to cause problems. Sometimes when pedaling forward, usually, but not always with high pressure, I hear creaking from the the area of the bottom bracket. What’s more, when this happens, and I then start to pedal backwards, it not only creaks, but I feel resistance.
When I remove the belt, and turn the cranks on their own, the bottom bracket does not rotate freely, in either way.
What do these symptoms indicate?