Thanks to Mike Hillis, I found the sweet spot Mike mentioned about on my Elliptical stock F5 coil . Doing what he said, I marked out on my coil with four bright chartruse arrows. It is spot on using pinpoint and a silver quarter as the target, it was dead on in the test I did. No more guess work in trying to find the center of target over the coil in ground. Now I will know where exactly to dig the plug and target. It will work great in sweeping the ground also as a visual aid. I got to admit that coil was giving me fits. I was spoiled with the good ole round concentric coil. THANKS MIKE!!!! 
