I started vaping about 5 months ago...started with v2 and almost immediately upgraded to a vision spinner. I now have a new groove mod that is also variable voltage and variable wattage. I have no problem with the voltage but cannot for the life of me figure out what wattage to set it on. I've done searches and looked at numerous charts...still don't get it. Can anyone please give some idea of what wattage to use with what volts.