All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
I have had "ok" luck with a PDR kit from Amazon that uses hot glue from an electric glue gun and a slide hammer with the pull tabs. Old squares actually have some steel there but take your time and keep at it. Every time you pull it off it moves a little, you may need to glue it 20 times and spend an hour to get it out. This with an air shim from Home Depot used for shimming doors and windows should get it done.