a few more picky observations...
i prefer to 'loop' , or rather purposely install some out of box slack. This depends on a captive or non-captivating ko, and there is allowable staple/hole/secure measurement to box ko allowed.
aslo, look at how the mark is top box. this is fine if the EC is using ALL the same boxes throughout, i just find that one style does not fit all.
so i use a plastic/ steel assortment, thus a center box measurement insures a consistency off AFF......
picky, picky, picky...