I just got 11 T206's in the mail today and they have little white stickers on the backs with the price hand written stuck directly on the slab. When I remove them it is leaving that nasty glue residue on the slab. I went to the garage and grabbed my trusty old can of "Goof Off". Bad idea!!

That goof off ruined it. I guess the plastic SGC uses and goof off (Lighter fluid more less) don't mix! I have tried windex and other things, but nothing is working. Does anyone have any tricks to help me out?
Thanks,
Dan