I just removed the lettering to add the new name and port, and there is a raised surface where both of the previous names used to be. It almost looks embossed. Each of the previous names were there for about 8 years each. Now that I think of it, the second name was a similar font and the exact same size as the first - maybe to cover it? If you run your hand across you can feel the change in the surface. Any ideas what causes this?