I use a smaller barrel iron for that kinda section. One that is just a but smaller than my natural coils. That will take in to consideration the droop that happens when it cools down and gets tousled with daily activity. I personally use a 1/2 - 3/4 " iron I can't remember exactly.
Cincinnati Ohio>>>Coarse protein sensitive 3a, Jessicurl WDT as a leave in, Biotera gel, White Boots, PW= coffeecurls

"Man tries to exaggerate what nature has given him," Charles Darwin (1809-1882).

"Nothing makes a woman more beautiful than the belief that she is beautiful." -Sophia Loren