All of the protank coils can use a very simple "tuneup"
The silica wick over the coil wick sometimes gets loose or is too tight and either results in dry hits or gurgling
A very easy process to fix it is available
You need some organic cotton and a pair of nail clippers
1. Remove the chimney and rubber cap
2. Remove the silica wick over the coil (leave the wick inside the coil)
3. Take a tiny strip of cotton roll it into a string the same width as the coil
4. Lay across the coil
5. Replace the chimney and cap catching the cotton under it
6. Snip the extra off with nail clippers
7. Reassemble, let it sit for a few seconds to wick the juice into the cotton
8. Vape Yo Face Off!!!