TT not calculating FTC correctly - simple calculation

It seems like TT is calculating my FTC about $3k less than what it should be. I used the IRS' pdf form to do the calculation myself and I'm getting a different answer. 

 

My calculation is simple (I think) because it's just foreign income (after the foreign income exclusion already claimed) divided by total taxable income and then multiplied by my US tax liability. I'm using all of the same figures as TT but TT gives me a lower number, and you can't see the calculation. 

 

Anyone know what I'm missing?