hi, i got a osub 80w baby, and when i put it on TC mod, it then asks me for coil types, i have the one preinstalled, which i guess is ni200 if im right? and when i choose ni200, i can only take like half a puff and it switchs to watt mode automatically, if i choose a different coil type tho, like SS or Ti, it works fine. what should i do? should i leave at coil type SS even tho its not ss.