I'm replacing the slideout seals on my 2005 Gulfstream BT Cruiser.
One of the seals is glued on with double-sided tape. When I pulled it off it left a lot of gummy black adhesive behind. I tried lots of things people suggested like chemicals, razors, scrapers, etc. and it really was a job to clean it off.
Then I found this great drill attachment that worked like a champ -
shows how well it works the first time I tried it.
Here's the one I used: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1