The driver's side speaker grill was missing the cloth cover. I picked up a pair of used speaker grills for £5 from a forum member who is stripping his car to use as a track car. The speaker grills on the TF are attached to the door card by tabs which are melted on from behind. As I have second hand grills, the tabs are broken, so I've used epoxy glue on two of the tabs to attach the replacement. The third tab was was missing so there's nothing to glue to. Using a Dremel, I bored a small hole to pass a cable tie through.