Get some new 3M automotive double sided tape as well. It's a pain to remove the rocker panels because the clips can break. If you have a prying tool it should help minimize the muscle work.

Ok. Thanks for the help. I'm just a little nervous to remove the rocker panels, but I figured I'd have to do it.

I didn't really follow the instructions either with the INGS +1 kit. The sticky tape and screws supplied didn't seem like it was enough, so I added screws, nuts, and washers. You will need to remove the rocker panels for the installation. Do a test fit and use masking tape to hold the parts together while screwing the parts together. The same for the front lip. I added silicone, which I later regret. It was a mess, and it wasn't really necessary.