After installing our new sunroof stoppers, our roof is now closing and opening perfectly. Here are before and after videos.
After discovering that there was an alignment issue with our sunroof mechanism, we decided to completely remove the roof to troubleshoot the problem. We didn't necessarily have to remove the liner but we were curious what it looked like under the padding.
All sunroofs eventually stop working. This is due in part to the sliding mechanism that's always moving up and down, and in our case moving up and down for the last 25 years.
The condition of our roof was surprisingly in good shape. The roof closed and sealed properly, not letting any water in during the big storm we just experienced in March.