Can someone explain to me the unflavored nicotine aspect?? I dont get the MG aspect.. I valr 3mg nic.. But the lowest i can choose is 24mg... Is this the purity of the nic?? Or what am i missing? Also choosing the vg/pg ratio of the nic, since i wont be putting too much nic in my 30 mls, does it matter if i go with more vg or pg in the nic? Will it affect my over all mox ratio of vg/pg.. Looking to make between vg55-70 pg 45-30.. Thanks guys.