I'm installing soundproofing in various places to suppress the road/tyre noise. Some posters claim a significant reduction in road noise by installing self-adhesive sound damping mats behind the plastic liner in the front wheel arches. I don't favour doing this for safety reasons should the material detach. I'd prefer to stick the damping mats to the inside of the car. What's the simplest way of peeling back the carpet covering to front wheel arches so I can gain sufficient access the install the damping mats?