Thanks for the clarification on the brackets. I guess mine is double secure. If I ever take this off, I will flip them around when I reinstall.I see some mistakes you did in installation. Only one bracket should be used.
As result top part extruded out of body but should be closer to it.
But any way you did great job, my congratulation!
I made some edits in the original post and directed them to your photos later in the thread.