Dave_D 0 Posted February 11, 2013 Found this video of Evan Nappan lecturing at an NJ2AS meeting. He covers this topic at around min 20:00. Worth a look if you have a few minutes. http://m.youtube.com/#/watch?v=DvFp8uCMgDo&desktop_uri=%2Fwatch%3Fv%3DDvFp8uCMgDo Quote Share this post Link to post Share on other sites