I have responded to your requests Philip and Jim. Thank you for the compliments on the clips. Just glad I could solve one of my own problems and help others at the same time.
I was not able to find any barrel clips that were small enough for the holes as everything I had on hand was too big. Knowing I will remove these at some point in the future to paint the car, I did not want to do something so secure that it would break the pins off when I remove them. I ended up using some black RTV gasket maker to essentially glue them in place. Using some blocked of styrofoam and a few bungee cords wrapped around the hatch to apply pressure on each end, the final result looks fantastic. They sit nice and flush against the body. I tried pulling up on them and so far they seem pretty secure. Below are some pictures of the end result. Job done!