Aha! As I read the pattern more closely, I noticed that it says to work 5 rows of garter stitch, increasing 5 sts evenly across the last row. You end the panel with 5 rows of garter st, decreasing 5 stitches evenly across the first row.
When I read the FYI about increasing, I assumed it was because the actual increases were not stated in the pattern. I have to give this a try. I love the idea of doing a sampler of panels (each panel is 82 rows long by 60 sts wide)
I'd say it is time for a visit to the LYS!!