Jerry, I typed a reply to you last weeknd & thought I hit reply, but I don't see it here now, sorry.
We put the 3m tape all along the back of the light strip, it's basically a " L" shape, so tape on the back portion of the " L" & the light [small portion of " L"] is below the bottom edge of his tailgate. And when he goes to let the tailgate down it now drags & begins to take the light strip off. I'm assuming it's drags on that plastic piece that you say you removed. We weren't aware it would come off & haven't check about doing so.
His first two light strips didn't drag, but this one is a different brand. His first two were red lense, his third one is a clear lense w/red bulbs when lit, he likes that aspect better. The red lense faded bad & quickly. And a faded red doesn't end up clear! But more of a yellow.
We'd even thought of buying shorter straps that hold the tailgate when down, just haven't gotten around to it, where the tailgate wouldn't come completely down all the way. We don't haul much stuff w/our ST's. We have a hitch-haul or a 6x10 utility trailer for such.