I have a Freedom, and where the ladder folds up and over and rests in an inset in the boat, there is what I think is an applied sort of pad that is a scratchy surface. Almost like a no-slip type of surface. Where the ladder sits, has become dirty, showing sone residual rust, etc. Is there any way to replace that, or even clean it? I've had detailers try to clean it, but nothing works. Here's a picture of it.