I have an Step that I have been using for many years. The manufacturer now makes the step with a sheet of solid black rubber tread on the top surface. However, when the Step first came out there were two diagonal rectangular areas in the black rubber tread where Rebock put their brand name. I noticed that on my step the tread is starting to separate at one of these areas. It is not ripped but just lifting up. I have tried gluing it back with super super super glue I bought at Home Depot, but it has not worked. Other than buying a new step and making the old one into a mini-step, does anybody have any suggestions on how to repair the tread.