what flavor from what vendor are you using?
PG makes my mouth and throat feel likes its covered in a layer of slime so i don't use it much if at all.
i also dont add Vodka or Pure Grain Alcohol AKA PGA. some non PG flavors come already dissolved in PGA.
PGA for me has a harsh throat hit.
here is what i do
dripping atomizer i use 1 or 2 drops of distilled water per 15 ML batch the rest is VG and flavor
for something like a clearomizer i use 1.25 mL of distilled water per 15 mL batch.
after i make the batch in a Pyrex up i heat it up using a small pan of hot water on the stove top. i just set the Pyrex up in a pan with water on low. then i have a digital thermometer i used to check the temp of the water. i never let the water get hotter than about 140 degrees F. around 130 Degrees F is optimal
the whole time this thing is on the heat i constantly stir it. i have a glass pipette that i use to take samples out of the batch every 10 to 20 minutes and let them cool down... i then load it in a dripping atomizer and check the flavor. when the flavor seems like it has stopped becoming stronger or changing (in the cause of multiple flavors) i pull out the pyrex cup and set it down on a pot holder and cover it with tin foil. i wait for it to cool all the way back down to room temp before i bottle it. this process will do 2 things. it will "steep" the e-liquid, the flavors will breakdown and evenly dissolved in the e-liquid. it will also remove most of the PGA left over from the flavoring.
i find it takes another 2 or 3 days of it sitting in a cool dark place before its totally ready. but its a lot better than waiting 2-4 weeks.
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also its not necessary, but i highly recommend waiting until the e-liquid has cooled back down to room temp before adding the nicotine because heat will oxidize nicotine and give it a sort of musty, woody / earthy smell and flavor with a peppery zing. the smell is not that bad but the flavor of oxidized nicotine is not good.
Gloves, Oven mitts and eye protection are a must. that e-liquid is hot and sticky and it will burn you if you splash any on your self.
i got fluid protection goggles at home-depot for under $10.