Quote Originally Posted by KSH
OK... I have had my seat refitted, because my left knee was hurting.

Now, the inside of my right knee is hurting.

I have been told that my seat maybe too forward... but I also speculate if maybe I am doing something odd with with peddaling that is making my knee hurt. I think this because it only starts to hurt when I peddal hard.... and go faster than 18 MPH.

So, do you know if knee pain can be caused from the way you peddal? And yes, I am clipped in.
Have you had the bike shop look at the angle of your feet when you're clipped in? My own bike's pedals are super-comfy, but when I use the pedals at the spin class, my knees hurt -- I think it's because my feet are at a different angle.