Thanks for this guide! I tried pulling the strap through the old clip and it wouldn't go through, so I thought I had to cut and re-sew the ends. I am so glad I saw this, saved me a lot of work! Thanks again!
I questioned the score, as well. I recently repaired the screen of a Nexus 6p (score 2) and it was far simpler than this looked. There seems to be some inconsistencies in the scaling.