I scratched my head over the same issue. Mine was a different style than yours and I found it on Etsy for about the same price. Solution was to drop lower (first try was in the larger section above where it sits now). Started one side in my hand and tightened half way. Slipped the TRD logo in and started the other side. Used a box end wrench on the nut and drove the Torx with my drill motor. Still took about 15 minutes to get it right.