Hi to all I recently got a witchers parva mod and to be honest was a little disappointed by its performance with a cartomizer tank set up couldn't get any vape crap sucking on thin air so had a look and noticed it had 2x metal screws for battery contacts 
they came out and replaced with brass ones and omg this thing now burns like a chimney,same tank and battery no other change at all but the difference is shocking so now I can vape happily once again if you have one and want to make it better try doing the same 
happy vaping
they came out and replaced with brass ones and omg this thing now burns like a chimney,same tank and battery no other change at all but the difference is shocking so now I can vape happily once again if you have one and want to make it better try doing the same happy vaping
