I read in this thread that you planned to install Killmat on your roof panel. One thing I would like to know is, in the heat in summer, does it stay in place? I have a box of the Kilmat and, left over from another project I have some Siless that looks almost the same. Cleaning the ceiling of the yellow glue from the factory roof padding is turning into a big job, especially at 77 years old. I'm scraping first with razor blade scraper and following up with lacquer thinner and/or weatherstrip cement remover. Results seem similar. But, it it'll take a lot of either solvent to completely remove the glue. Any idea whether or not the old glue needs to be completely removed? On other projects I've learned that these Kilmat sticks really well. My car is a '63 Dart wagon. Those grooves in the roof panel add interest while removing the old mat and glue. Anyhow, I'm close to just scraping and hitting it with solvent a couple times and going for it. Any cautions or comment?