Nice! Good job. This is the ONLY way to truly repair these rusty roof issues. I have removed a few of roof panels just like this also. I would use the spot weld cutter, and remove all of the gutters, sand blast them clean, zinc primer and reinstall. Once the gutters are off, you can sand blast everything and the repair will be 100%. Also, with the roof off, its easy to see all the rust underneath, and repair it on a stand before you reinstall it. I love this. I will be doing a roof job like this coming up this winter. Awesome!