I have an old Eureka 2-person tent which has been packed in its carrying bag for many years. When I set it up today, one side of some of the nylon pieces (for example, the inside of the rain cover) is very sticky. It even made my hands slightly sticky, although it washed off easily. Is this the nylon degrading so I need to throw this tent away or is it salvageable? Is it possible to wash this sticky residue off? If so, what should I use?