The sweater is called Urban Fetching. It is an Adrienne Vittadini design from the Fall 2002 issue of Vogue Knitting. I am using the specified yarn (not usual for me) Trina. The pattern calls for a gauge of 16x24 suggested needle size of US 9 . I believe this is the chunkiest yarn I have used for a sweater - but it is a wool/cashmere/acrylic blend and is really quite nice.
I started this a couple of years ago, knitting one sleeve. The sleeve knit to the specified gauge, all was well. A year or so later revisited Ms. Fetching to knit sleeve number 2.
I have a "touch of OCD" and always record each row knit in any situation where I will need to match my work. I knit sleeve two - same yarn, same needles exact amount of rows. Results: different stitch and row guages, different sleeve width and length. Tucked sleeves in bag and ignored.
Marie gave some excellent advice, to knit a third sleeve and see where my gauge is now. I believe I will try this.