Basic Math: 4ml Nic + 96ml VG so using just 65ml you would be effectively using 4/100*65 (2.6ml Nic)+96/100*65(62.4 VG) not a lot of difference on the VG front 62.4 v 61 but quite a bit for Nic 2.6 v 4But surely, when making that same bottle up in 100ml, I'd only use 65ml of the 3mg VG base? (the other being 61mg plain VG and 4ml VG nicotine) ....what am I missing?