i dont have a flat, but i have an inner conch. and it was pretty bad, but not unbearable. Alot of pressure, then it was relieved. Ive had good luck with my punch. You will like it.
2g x2 lobes, 6g left inner conch, 14g helix, navel.
Future: right inner conch, helix x2, maybe a 8g navel, 14g tongue, 0g goal size for lobes.
Retired: 12g nipples, 14g tongue, 8g upper lobes, 14g upper lobes.