Like you've said... some people have had luck with this, others havn't. Theoreticaly it's not possible. Once breast tissue has developed, there's no going back. But who's to argue with the many people who have claimed it helped?

Nolva seems to be what everyone uses. Depending on your body weight, I'd try 60-80mg every day for a month to see what happens. Mixing in an anti-aromatose like arimadex may help.. just be careful when running large amounts of anti-estrogens for an extended period of time. It can really throw your blood lipids off.