Afternoon guys and girls.. first post so be gentle with me.. so gave up the smokes 6 days ago.. swimming along nicely at the moment with my twisp (which I now realise is Hellishly exspensive) and I have hit a deal breaker.. the very harsh bitter after taste.. I spoke to twisp and they seem to think I am using the clearo wrong.. I am not a rocket scientist but it's a very simple procedure.. does anyone having any ideas what causes this? I was a pack a day smoker so am currently using 18mg tobacco liquid.. which when I started last week it tasted great... I put a 3 coil in today because I thought I may have dry burnt the others but I now realise it's not this as the taste is still the same with a new coil.. thanks guys and girls in advance