Paul,
Just to say that I'm another one of those who really enjoys the Soulmates 'theory'/stories. I would've offered my brain (pile of mush that it is) if it weren't otherwise occupied at the moment with exams.
If you're still looking for help in 3 weeks time I may be able to help, tho you're a-plot skills are way better than mine...
Can't wait to see it, when you start posting it.
Loriel