Zio

Hey guys i got my clutch out of my car. It has been grinding while letting the clutch out in first gear (most of the time). Well nothing looks wrong except the TB. I noticed that when i spin the throw out bearing is doesn't spin in a circle, it kind of wobbles. Do you think that is the problem. I am guessing this isn't normal, but am I worng? ALso if this is the problem where can i buy a new one and how much?

thanks
Tom