@#KulrMeStoopid i found this that you wrote i think i will try this
50ml of PG 52mg nic and Cut that with 50% boots vg and you have 100ml 36mg, cut that again with pg.vg and you have 200ml of 18mg . so i should have 200ml of 18 mg juice so all i got to do then is add my Flavouring