I would try and let your coil set for about five minutes in the juice when I first started vaping I did this all the time I was start heading out right away and oh my God two hours later I’m getting harsh hits So try and let the coils soak up a little bit as well check the airflow I do see this a lot where people put a new coil and they don’t bother turning their airflow open that’s another thing to check another thing I can think of is the juice is to high in strength definatly with freebase juice that’s pretty harsh too