Interesting Philip about the out of phase. We've got a Thorn Rohloff and have always preferred out of phase by about 5/6 teeth but have just had the rear hub casing crack. This means a potential 8 - 10 weeks downtime whilst the hub goes back to Germany via St John Street cycles. Well it would except SJS are going to lend us a rear wheel - what amazing customer service! Anyway, I did wonder if our out of phase was a contributer although that doesn't make sense I think. Any thoughts?