I've been riding my new Soho S for a month or 2 now and I can help but think this thing is WAY noisier than it should be. One of the things I wanted in a single was the simplicity and smoothness of the drivetrain compared to my old urban mountainbike conversion but this thing is just noisy. Sounds like most of the noise and grinding sound is coming from inside the hub when I pedal. Is this just something that comes along with a flip flop hub or do I have a potential issue that I should have my LBS take a look at? I've checked chain tension and it seems fine. I've cleaned and re-oiled the chain and sprocket to make sure it's all in top nick and it doesn't make a difference. Also it only makes noise when I pedal...when I'm freewheeling it doesn't do it. Any thoughts?