whoa, didn't mean to start a huge argument, the fit is working for me, no knee pain, i'm pushing harder and my average speed is back up 3 mph higher on any given route i'm doing. I don't do power, but I am pretty sure if i was hooked up it would have increased. So far 200 or so miles without any pain. I could care less if my power went up from the fit, as long i'm getting to bike again!