I do not use the premade coils in my TFV4 so cannot help with them but you could try getting to the vape you want starting low & then seeing what incremental increases does to the vape. Start with a cold attie & DNA 200 , check the resistance with the atomiser checker & see it it corresponds to what it should be.Try pushing on the positive pin from inside your device(if you can) & see if the resistance changes significantly, if it does unscrew attie slightly , push pin up & then rescrew on attie.My pin was a little sticky(FT V4) because of the angle of the 14 gauge was causing it to stick a little(sorted now).My mod resistance is .006 with the Fat Daddy V4. If that is all good then try setting temp to 425f , preheat to 60 (soft) , 1 second & 40 watts power , do not lock atomiser , set airflow about 1/2 open. Check the device monitor & see how it performs , open the airflow & check the difference. I did take me quite a lot of fiddling to get to understand what i needed to set to get the vape i wanted.