The '3' series Protanks used dual coils and dual silica wicks.
This (i.m.o.) only made the problems of leaking through the gaps in the juice channels only worse.
I would recommend you go cotton. Kanger VOCC coils should be more reliable and able to wick faster and vape at higher power.
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Unfortunately, I refused to review the entire range of Kanger dual coils back when they came out (having been sent them all). Evod 2, Evod Glass, PT3, mini PT3.
It ended my reviewing career, but hey, you've got to stand up and be counted. They were close to being workable but I also felt they needed more power to match the single coil tanks.
f.w.i.w. the Protank 2 with the airflow base was less leaky and a nice vape all round. That paired with the MT32 SOCC coil was about the best combo.