Every time I try dripping with the ProTank 3, I get terrible, terrible results. It has a removeable drip tip so I take that off, drip in 3-4 drops, and vape. At best, I get a small piff of vapor at pretty high voltage, I taste nothing, and I hear intense gurgling happening. Am I doing something wrong, or is it just that the ProTank 3 is terrible for dripping?