I'm rather tall as well, and when I tested the ZZ-R1200 last summer, I noticed this happening on both it and on the Honda CBR1100XX. In fact, I thought the XX had more of a tendency to bake my calves to a delicious golden color than the ZZ (perhaps because the XX made more power on the MO dyno?), especially in LA summer traffic. But either one of them was bearable in this regard, especially when they are being used as they were intended to- on triple digit cross-country trips. It seems weird to have your legs so toasty, but you'll get used to it. The ZZ-R is an excellent bike and I wouldn't think of this detail as a detraction from the entire package.