The Iterative calculation in TurboTax can get a bit wonky when it around the 400% mark.
If you are absolutely positive of your manual calculations, on the screen immediately after entering (or editing) your 1095-A, say it was NOT associated with a self-employed business. Then manually enter the Self Employed Health Insurance deduction in the 'regular' place in the program (where it tells you not to enter 1095-A amounts). If you have a Schedule C business, that location to enter it should be under other business expenses, then insurance, then it should have your personal health insurance.
