Original poster: "J Dow by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jdowphotography-at-hotmail-dot-com> Oh ya…. And the gap between the turns of the primary should be .25” So quarter inch copper tubing spaced quarter inch apart. And my pry coil was made out of .25” cu tube not .5”…..opps Read you later Josh