Wasn't sure where to ask but I'm thinking of getting the istick mod and in a post I posted under batteries and chargers someone stated that while the istick is a good product it had one flaw and that was it had no buck converter but a boost converter and he agent on talking about voltage and ohm which I'm not to familiar with he mentioned maybe using a 3 ohm coil so I looked at some sites and most I find are between 1.5 & 1.8 so my question is can you buy 3 ohm coils if so know of any places and would it be OK to use with a istick?