Before I try a little something, I wanted to get some thoughts from you folks. Long story short, I've always vaped 70/30 or 80/20 vg/pg mixes. Its just what I've been used to. Every tank I've used developed vacuum lock problems after 3 to 7 weeks. They just start to wick poorly. It doesn't matter how many new coils I try or how I prime, the problem persists. Is my problem likely tied to using too thick of a juice? I'm going to go ahead and mix a 50/50 tomorrow and see if things change for the better. I realize the pros and cons on using more pg or more vg. However, I'm wondering what ratios those of you that use tanks and RTAs go with. I'm just tired of persistent wicking problems and am hoping a change in my mixture can make things run smoother.