... then took a putty knife to the dried out adhesive. This worked great. Took some effort, and a face mask but it scrapped pretty clean. Then 60 grit sandpaper. Then Duratex and it looks great. The bigger challenge is the cat stink. I've had to replace the lower speaker and foam in the box. I'm spraying it down with odor eliminator and putting it out in the sun every day, like bleaching bones in the desert. We're having a major heatwave, so its getting baked. Seems to be working so far, hardly any smell left and I plan to continue the treatments for another week at least.