Ok, so I've looked at the nifty chart that I've seen posted everywhere on this forum that shows ideal voltage/power ranges for various resistance coils, and I've noticed it gets close, but I guess fine tuning it is dependent on the specific juice in question. Is this related to the viscosity from pg/vg ratio or is it a flavor thing? Is there a rule of thumb for how much you adjust based on the vg/pg ratio of your juice? Does it vary with flavor so much that you have to do trial and error with each different flavor?