By my cack handed way of working it out , you need to add another 16 mg of nic which would equate to 1.5 mls of 54 mg , bear in mind you will be further dilluting the flavour though ,
Then again , this could be utter BS ..
Maths was never my strong point .
hmm 2.5ml sounds a lot to me, thats half a bottle again of nic. Not disbelieving you though sir, thanks for your time
I will wait for a few more answers and take the average lol