Ha what a hoot. That's my website.
If you want to remove the convertible well trim, you must remove the side "reveal" trim where the quarter windows are. Once removed, you will see screws that were covered up. Remove those screws and you can now pull off the well trim.
I didn't have luck with the original clips alone, so that's why I added an additional screw in the middle, which is covered up by the overlapping piece
Good luck. If you have more questions, email me...should be on the website.