i have the Kanger subox mini and just ordered and received some Kanger 0.5ohm Clapton coils. I put one in my tank and it seemed a little hard to get it screwed down but it did go in. Filled the tank, primed the coil and fired it up. Problem/concern #1- seems like it takes several seconds of inhaling before it actually starts to Vape and problem/concern #2- the Omhs on the digital readout fluctuate from 0.5-0.6 when I hit the fire button to make the readout light up. What's up with all that?? Anyone have any advice or having the same problem??