Is it really necessary to have an ohm tester when building coils? If there happens to be a short, wouldnt my Smok Alien 220w mod keep it from firing? And anytime you screw on the Rda, it shows the resitance. I just dont see the need for an ohm tester. Another question, when building coils with SS, how do I need to go about heating the coils? Low wattage, short pulses? Thanks for the help.