Heating pad is wrinkled so clothes come out wrinkled

For anyone else who has this problem(i.e. the pad is wrinkled but other than that fine), I have a Corby trouser press which had wrinkles in the pad so it was pressing those wrinkles into the trousers every time. After considering replacing the pad, finally I though of a simple solution that worked:
Take an iron and carefully iron the creases out. Start at a low temperature and gradually increase it until you have the desired effect. You might need to pop the board out of the metal arms to get a better reach. This can be done fairly easily.

I thought my old one was faulty so I bought a new one and still experience the same wrinkling problem!