Fir Cone Border Scarf

I'm knitting the scarf with fir cone border on page 96. I'm having trouble with Chart A, row 3. I end up with an extra stitch at the end of the row. I've ripped and restarted this border at least fours times with the same result. I've modified the pattern by making the first stitch a k2tog which evens out the stitch count but leaves a slight difference at this spot on the edge.

Did anyone else have trouble with this chart? If so, how did you resolve it?

Also, my chart legend shows the edge stitches with the shading reversed. RS stitches are shaded in the chart but not on the legend. WS stitches are not shaded in the chart but are on the legend. I've choosen to ignore the shading and to work the stitch as instructed.

I haven't seen any errata for this particular pattern. Has anyone else?