I had marked the hole locations for the hold down strap per the plans. Checked with the finished box and found the marks close but not exactly aligned. I used the holes in the brackets to remark hole locations and drilled one hole. Inserted a bolt and match drilled second hole. Deburred holes, then used the squeezer to rivet on the nutplates. Final check with battery and everything lines up well. Cut the hinge pins to length and bent the end to be captured between the battery and the hold down bar.
