I misunderstood your reference to "FTC." I thought you were talking about calculating your income tax on Form 1040 line 16. The Foreign Earned Income Tax Worksheet is not used to calculate the Foreign Tax Credit. If you think that the calculation on Form 1116 is incorrect, we can't tell you what you're missing based on just a vague statement that the credit is "about $3k less than what it should be." You have to say specifically what TurboTax calculates and what you think it should be, with specific line numbers and exact amounts.
