Now that the nutserts have been installed. Align the mounting panel against the door locating it with two of the provided screws. You will see that there are 4 positions where the inner pre-fitted nutserts in the panel interfere with the vehicles door. These are the positions where you will need to drill clearance holes.
Using a thin marker, spot through and mark where these holes need to be drilled. Next, remove the panel and carefully drill holes in the marked positions. We recommend pulling up the plastic sheeting behind the door prior to drilling to avoid metal swarf being caught on the inside.
We suggest using a step drill for this step, you can start with a smaller hole and work your way up in size until you have the appropriate clearance. The holes should be approximately 9 mm.