I am making a 4.5" x 30" TC and am going to wind 3/8" Cu tubing helical wound on a 45 degree angle. Though the secondary coils 1st wind ended up around 1.5" above the primarys 1st wind will this undercouple my TC? I would also appriciate any tips on perfecting my design. BTW.. I am using a 15KV 60ma NST Chris __________________________________________________________________ Get your free Australian email account at http://www.start-dot-com.au/