Have been given a second hand beaver sweatshirt for DS, who is being invested at Beavers next week. Previous owner had wonderwebbed badges on, and black non-sticky badge backing remains from where they have been removed. Any ideas how to remove it, some of his badges will cover this up after the first week, but it will take him a while to gain badges to cover all the mess, or do I buy a new one? Seems a shame to waste an otherwise fine top.