Ok, since the US postage is so confusing I think I figured out what works for me personally. I put in my About Me page, and as a notice at the top of my auctions, and right in my auctions, the following information.
*****If you wish to order this item, please send me your mailing information so that I may aquire the correct postage. I offer 2 shipping options for most items so I would like to get the correct postage for those options. The postage rate indicated is not the correct rate.*****Thank you for understanding.
Ok, so that is not exactly what I have posted, but you get the idea.
Will this work, or will it cause problems?
Thank you for your opinion in advance.