Also, what is the resistance on the build you typically in it? I wonder if running a low resistance coil, raised as high as possible off the deck, along with low wattage would help with insulator failures?
I used the factory installed coil in the rba so I didn't have time to try any custom builds before the insulator gave out, but the factory coil was running at a stable .6 ohms until the insulator failed (on an istick30 watt)
