I primarily vape Razzleberry from Mt Bakers, I put a new coil in yesterday, vaping @ 65 watts ( I properly primed the head, per instructions here, working my way up from 20W like 5ish W @ a time, and with non-fired vape before this ) and 1 day later it's like I need to replace my head already, what causes the fluctuation on the display for ohms?, yesterday it was .3 all day, today it's reading .4 @ 5.3V, but it was just @ .5ohms for some reason. Why does this happen/what does it indicate?