There's no need to drill out the factory threaded inserts for the new pins, they are the same thread but are not deep enough due to a thin layer of plastic on the inside. To install, insert the threaded "ball end" pin in your drill. Run the thread in and the threaded pin will push the plastic out of the way. For the two bottom row, center pins, I cut them shorter to about 3/4 to 7/8" long, this way the extra threaded shaft won't interfere with using the storage opening.
On the color panel, I used a 3/4" hole saw to make the hole for the push button part. Then, as explained in my previous post, I used an oscillating multi-tool with saw blade to remove material on the inside of the color panel to allow the nut to fully engage the button threads - you don't need to do this, but it gets the panel mounted about as close to the door as it was originally.