Hi Bluejay, I too would be interested in this thread though from a spectator viewpoint. All the more if there are any resident experts on this subject matter. Just send buzz an email directly. Maybe if he doesn't respond the topic could be pursued anyways with people posting to both sides of the current knowledge on the topic. That way we can all become current as to where the research has brought us so far. We can all know what problems and issues have been worked out and which ones remain to be resolved. I think it may be beneficial for the lurkers as well.