>>3213139>>3213159Well, the aperture doesn't work at all now. Seems it is a common problem. I can also hear something rattling around inside now. When I looked at the repair arm before then looked at it now, there seems to be a spring missing. It was just inside the little hole the aperture arm sticks out of. That makes sense because there was a distinct, "Twang!", sound when I took one photo.
Since it is under warranty, I'm sending it in. Wish me luck.