I came across a Weber that was in decent shape for free. After some research and speaking with Weber I've determined it's a 2000-2001 Genesis Gold C. Thanks to this forum I have found many tutorials for restoring many of the different components but I do have a question about removal and resecuring the metal side panels attached to the lid. They don't appear to be typical threaded nuts, but I am not certain because they have some build-up on them. I cleaned part of one off and wanted to inquire whether these are push caps or some other attachment method. I am concerned if I take them off to clean/repaint the side panels and porcelain top that I will be unable to get it back together. Attached some photos for reference. Any advice would be helpful.