Cakerator:
I never heard about using the flower nail on this size cake until recently. I never used it for this size cake until then. I never had a problem. I did bake at 325 degrees. I use it now in hopes of the cake getting done sooner but usually forget about it. I know many that bake a lot of this size and never use the nail.
I would turn my oven to 325 and just watch. I don't use the flower nail.
When your cake is done,(use the toothpick test) if it has a hump in the middle, lay a towel over then, place a cookie sheet and press down until it's level. works for me every time.
thank you all for your help! i made it through 
i had the cake on 325 and just kept watching and checking, and watching, and checking.... it came out okay i think.
its funny because before i heard about the flower nail trick, i had baked a cake this size once and it came out fine. but when i heard about the trick here on CC i've used it ever since. so, i panicked. LOL
it all worked out fine in the end. thanks again to all of you.
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