First off, when ever I buy coil heads for my MT3S I always get the 1.8ohm coil heads so I'm pretty used to them and I know how they perform. Well, I ran out of 1.8ohm heads awhile back so I took my moms 5 pack of 2.2ohm heads (she quit vaping a long time ago) and started using them. I must say, 2.2ohm heads suck, they gunk up so fast compared to the 1.8ohm heads. I can go 2-3 weeks on one 1.8ohm head before having to clean it, with the 2.2ohm heads, they gunk up within a day maybe 2 so the performance drastically gets reduced. I vape the same amount, use the same battery, same voltage, same liquid so non of that is the problem, anyone know why this happens?