There's a trim tool available. It's the one that looks like an directional arrow on a handle. This tool is also used for windshield trim clips. You just hook the edge and pull gently and use the tool as a reaction arm to roll the cover off. Use your free hand to keep the cover from floping around and bending but keep gentle pressure on it to help it roll off drip rail. I f you don't have this tool one can be made from an old metal kitchen fork. The reason the factory tool has an arrow head shape is so left handed and right handed people can use it when they switch from the right to left of the vehicle sides. To make the fork tool you cut off both outside fork stays at an angle toward the inner stays leaving about 3/32" of the stay on the inside, where the cut out between the stays are. Next cut the inner stay off leaving it 3/16" long. Repeat on the other side of the fork and now you have a right and left sided drip rail cover remover tool. You just use the smaller outside edge to pick the cover loose at the front and use the longer inner stay to help guide and roll the cover off. Stop at the bend in the roof where the side and back of the cab join. Then get in the bed and remove the center joint cover and follow the same process from the center to the side but now you can pull the trim cover off. This just keeps it from losing it's form or kinking. Repeat on the other side using the opposite side of the tool and you done. As was said back on is EZ.
