figured out the solution to my last post about the build up on the rubber cap!
1. to make sure there is no more liquid, take a q tip, unscrew the drip tip, and stick it up there and twist it around ( ;D ).
2. dab off the rubber cap one more time.
3. screw the tip back on.
4. when you hit it, let go of the button a few seconds before you take your mouth off the mouthpiece while still inhaling. this will clear any vapor that is trapped inside of there. the reason it builds up is because once the liquid condensates again, it becomes liquid on the drip tip and on the rubber cap. just make sure you clear the drip tip after you take a drag on it! should solve most of the problems.
also if it still persists, make sure your rubber cap is on correctly. there are two slots toward the rim. make sure they go over the upper set of wicks. it also wouldnt hurt to dry out any excess liquid in between that and the coil. also, screw your drip tip on very tight to the o-ring. and screw the whole head pretty tight onto your tank. dont do it as hard as to strip the tracks though.
Hope this helped!