[Help!]

I must really be a wimp, with my Subtank RBA with a .6 coil anything over 13 watts is too harsh, but I use 8mg nic so that is probably why.

i started with an istick mini.. and it was too harsh for a while and then swiched to the Subtank with the xpro m50 and slowly worked my way up 

[Help!]

Im new to vaping, i was wondering, why is it that i get dry hits with my Subtank mini prebuilt .5Ω coils on 40w but not with my Subtank mini rba .7Ω coil on 40w, it confuses me.. please help