I have decided to put the rubber covers on the fiberglass running boards. I ordered the covers when I was building the car. The painted running boards looked ok I just wanted to change the look and now I am having a problem getting the covers (ordered from Drake) to bond to the clear coat.I talked to my painter and he said clean the painted surface with denatured alcohol and also the covers. I used 80 grit on both surfaces and applied the silicone (his suggestion) to both surfaces and put pressure on the boards with weights overnight. The silicon would not adhere to either surface very well. I pulled the covers off cleaned everything and called Drake they suggested DAP contact cement.I coated both surfaces per DAP instructions on the can . The same thing again no good adhesion.I am looking at the Liquid Nails now,but I am wondering if any one on the forum has had this problem,or better yet what will work.