something isn't right
it's been about a year since I worked on the rear fuse bottom skin.
I do remember once or twice, or so - that something like holes not lining up perfectly and having a minor freak-out over it. When that happens, stop whatever you're doing, walk-away - a few deep breaths, back up a few steps, re-read the instructions, study everything closely - my few potential uh-oh's worked out to be a slight progression down the wrong path was due to trying to go too fast. If it still doesn't line up, don't force it and seek other input before proceeding.