Well if it's sticking up from the rubber, you probably left some of the old adhesive on the chassis. Make sure you clean that plastic chasers off really good. Then use a new adheasive, preferably 3m, but super glue works I guess. The rubber on the chassis is fragile. If it's sticking up or loose, rip the loose part off, better yet, cut it off with a razor blade. Just be careful. Let me know if that doesn't help. A picture of the problem would help me help you a lot more too. :)