Hey im new to making juices. So ive Got this one flavour and its really harsh. I think its cause its 70/30 pg/vg and i usually use 70 vg and 30 pg so i bought a bottle of vg and i put some into a 30 ml bottle. Now i have about half of the juice left so its about 7ml and i want to make it proper. Can anyone tell me how much vegetable glycerin i need to make it 70/30 vg/pg if u can understand what i mean.