Look at worksheet 5 again - I thought the same thing you did. But a post earlier in this thread revealed my error (and I think it is yours too).
Look at line 9 of worksheet 5 - subtract Line 8 of the worksheet from line 3 of form 8812. If you did what I did, you subtracted line 9 of the worksheet from line 3 of the worksheet. When I used line 3 of form 8812, I got the same number as Turbo Tax - which was 7150 versus 4000
