I think the most helpful posts about the non-random rolls (including stats) were posted on this DB in July 2010. For example see:
http://brainking.com/en/Board?bc=26&bscx=1066337#1066337


The particular issue discussed there may have been fixed by now - does anyone know?

Re: taking advantage - I think I remember Nabla posting a set of opening moves that took advantage of the unusual opening roll distribution, but again - this might no longer apply.