I have a DID clone, the vulcan. i got it up and running, but the resistance of the coil keeps wildly fluctuating. it started as a 2.4 ohm coil. then it went up to 6.6. then i got an OP error, so i opened up the top cap and prodded the coil a bit, evening it out and tightening it up. it went back to around 2.8. but it keeps going back up, sometimes over 9. it keeps shorting out then going to normal, then up way high. anyone know whats going on? the the coil getting screwed up by opening the top cap?