The entire top part of my circle pad had broken off, so I had no problem getting the old one out. I actually had more trouble getting the ribbon cable back into the clip, and the new circle pad attached to the stick, than any other part.
That said, this was way, way easier than I expected it to be.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.