There is one thread in particular that always makes me impressed to look at. I saw it got another post in it today. All I can do is look at the thread, because the math and phyiscs is so far beyond me its amazing. https://www.physicsforums.com/showthread.php?t=87097 We need a PF Titan award, and they should go to: Sweetser Van-Esch. CarlB You guys are amazing. You rock.