The sweater is done, but not blocked. I worried at first that I did not get the measurements right for the armpits because, as you’ll see in the photos, the cabling goes down further under the arms in the new sweater than in the old one. This may be because I guessed at the wrong row for where the cabling started, or that I counted incorrectly for the shoulder of the sleeve. The sleeves are also a little longer than they should be, but that is easily fixed by turning the cuffs.
For the entire project, I measured the yarn gauge and tried to copy stitch counts. The only place it feels off is at the armpits, the trickiest spot of any shirt, but at least it’s not tight there. The good thing about my version, aesthetically speaking, is that the cabling meets nicely under the armpit.
The other thing I have to keep in mind is that the original has been loved over the years to a nice relaxed state and I haven’t even blocked the new one yet. Once that is done, the yarn will relax a little.