Picked up a 2001 Sirrus Comp today. I got home and tore it apart to get a better look at what I was working with. Everything was looking good until I took off the rear wheel and noticed the tire had been rubbing on the frame. I wanted to get a second opinion on the condition. There are no holes in the aluminum, it is worn about 1mm down on the seat stay and a little more than 1mm on the chain stay. The patch is about 1/2" across at both locations. Here are some pics.