Codeman, I have seen big bold Super Tuscans in the 15%+ range. You might want to add a little more water to get the reading to 1.105-1.106. I have been able to ferment my Super Tuscans to SG 0.992. BTW, that has always been a great kit. Good luck.
I have not done the Super Tuscan, but I did have another En Primeur kit (Chardonnay I think?) that came in at a really high OG. To my surprise it fermented out just fine - down to about 0.996 or so if I recall correctly.