Magnum Ui6 Cassette noise


New Member
I just bought my Magnum Ui6 in September and I love it. I have about 280 miles on it so far. Recently, when riding, I am finding that my cassette is making a grinding noise. When this happens, I have dropped the pedal assist to 0 and it goes away. It is inconsistent but does not seem like it should be doing this. Any recommendations?