I have the wildberry shiraz sitting at home, just waiting to be made (it's a bit more patient about it than I am). I'm not planning on spiking it w/ sugar, though, so I can't help you with nutrient advice.
Just out of curiousity, why'd you think that you should have used nutrients with sugared green apple? Was it because the yeast were stressed and produced off odors, or because you felt that if you are already tossing things into the kit that weren't included in the box, you should toss in nutrient as well? Everyone who I have heard increasing the SG has never mentioned nutrient, but that doesn't mean that they weren't adding it.