I have recently purchased a set of these wheels and have found them to be the slowest wheels I have ever ridden. The main problem i find is that the hub “stick’s” every time I coast and I feel myself slowing. When the wheel is in a stand and is pedalled it even engages the cranks. I have stripped the wheel down and the wheel spins fine but when you stop the the hub from spinning it noticeably slows the wheel. I have emailed Shimano and they have not responded and have had one rear wheel replaced and still the same…slow wheel. Also the ratchet is very muffled when free wheeling not like my carbon Dura ACE which really have a loud ratchet…help anyone??