hi there I've recently started using the x cube 2 with ni200 coils. Resistance is set at 0.14 and coefficient rate at 0.00600, as I vape I notice the ohms changing. Wondering if it is supposed to do that and why if anyone knows? Also I'm finding I only enjoy it set at 600f ...I've noticed people using it a lot lower and when I've tried tit any lower than 550f I've pretty much got nothing out of it. Was wondering if I'm doing something wrong? Thanks in advance!