I bought some Prokennex leather grips awahile ago from TW and I'm having trouble putting them on my racquets. The grips don't come with an adhesive strip on the back and I thought I would be able to put the grip on w/o it. I've tried, but the leather keeps slipping. Anyway, I'm wondering if I can buy that adhesive strip that replacement grips come with. I've seen double sided tape, but they were all fairly thick.