You go way above 10watts? (like 20+ watts?) Seems to me like those temperatures are not needed to vaporize your juice. Or allot of the heat is lost. Thing is, if you go way beyond 10watts (read higher temps) you'll prolly be making more and more "bad stuff". At certain temperatures PG as well as VG and most other stuff in there will break down into illness (cancer?) causing byproducts.
Do correct me if I'm wrong, I'm not stating to know it all, I'm just repeating tidbits of what I've read elsewhere.
No I don't go far over 10 watts, but you didn't say in your comment far over 10 you said over 10. Many vapers are finding they like 10-12 watts, not so high as to cause the issues you are talking about but enough over things like the kick don't work well for us. Still it is high enough you need to know what you are doing.