Original poster: "Justin Wright by way of Terry Fritz <twftesla-at-qwest-dot-net>" <justin-at-tracesofnut-dot-com> Hi All, I saw in my travels some pictures of a coil with two primary coils (one above the other). Any comments on the effectiveness of this? Could the owner of the twin primary coil please let me know how they are connected (serial, parallel etc) or send me the link. Regards Justin.