RP, I guess you're referring to the rubber trunk mats? In my case, the rubber mats and the adhesive holding them in situ were totally fried to the point that they were as brittle as plastic. So I simply ripped the whole lot out in pieces....now after seeing the price that the new mat sets are going for (around $800!) I really wish that they had survived. So I'm afraid I don't have any hints for you other than whatever you do...do it slowly.