Looking for ideas for a lining for my new 46L Givi Trekker dolomiti top box so my helmet doesn't get scratched when inserting and removing. Don't like the idea of using adhesive ( too permanent) and automotive carpet. Thought is to get abs sheet plastic and form with a heat gun and cover with automotive carpet and use strips of velcro to hold in place inside box. Anybody have experience with ABS or other ideas? Thanks.