Exhaust tip removel

it's a little hard to see from your pic, but I believe the tip of the tip is supposed to be tipped up, if you get my drift. At least it was on my 68 gts, when I bought it new. Don't know how much, maybe somebody here has the exact measurement. I know the guy who did my exhaust and tips on my 67 cuda, didn't do it right, and it bugs me no end.