when i first started to diy ejuice i got confused with all the 70/30 and when you are using ejuice me up the pg is on the left side and vg is on the right, maybe try 30/70, it is an easy mistake to as iv done it plenty of times, all my juices i make are 70 vg 30pg and they carry alot off flavour
also what tank and coil are you using