I have replaced many sets of diffraction pads on Wilson speakers. First off, see if you can still purchase a new set from your Wilson dealer. To remove the old ones, you will need to carefully apply and soak the old ones with acetone. Be sure to wear rubber gloves. Once they are fully soaked, you will be able to easily pull them off. Then you can put the new ones on. The speakers will look a lot better. Also, if you don't care to use the open-cell foam grills, you can request that the new diffraction pads come with no velcro. I think they look much better without these velcro strips. I hope this helps.
