I have never vaped with a nickel-Ni coil- at 0.2 ohms could be too harsh, like Lefty said, try lowering the temp and then raising up 5 degrees at a time, as he said make sure the base o rings are on and I believe the coil itself has a cap, there is something wrong as that base should not leak only leaking I experience is with the RBA base! It is not the egrip, they work great, you have maybe some harsh juice too, I did not care for Joyetech juice at all, but grape may have a harsh flavor, pg is more the throat hit and vg is more the clouds. Take it apart and rescrew the coil in making sure all seals are in, rescrew again into the base, tighten in make sure good and tight, even when it feels tight,Turn upside down, take off the drip tip and wipe the inside with paper towel, maybe some juice got inside the air tube, and keep upside down on paper towel for a bit, then put the drip tip back on, then turn on the wattage start at 300F and I think the reviewer said that 360F was a good vape and drag into your mouth and a drag to make sure warm enough for vapor to form.Take some slow, shallow practice puffs, do not draw too hard, and do not chain vape. Don't worry about big clouds, lets just worry at first to stop the leaking,when done vaping, take off the drip tip and charge upside down!
I wish you lived by me, so I could help, I would give you one of my brand new Joyetech eCab kits, I bought 4 when I started vaping, very easy, small and worked, I used them for at least 5 months, I have an extra never used. and would work with higher pg liquid like the Joyetech eliquid. Actually the Kanthal 1.0 would be less harsh of a hit, I do not use Ni.
Do you have other juice? Maybe the pg which is very thin is too much, you may need higher vg juice. At least 60 vg and 40 pg, with very low nic just to get over the taste of eliquid, which at 1st can cause coughing,and hard tasting in the beginning, once the coil breaks in the harsh taste seems to go away.