It sounds like, based on your description, that the 1040-V is for the tax you've already paid. I suggest you review page 1 of your 1040-X. Line 16 should be the amount you paid when you filed your original return. If there is an amount on Line 20, that is the additional tax you owe. If that line is blank, you don't owe any additional tax. If there is an amount on Line 22, that the additional refund you will receive.
**Mark the post that answers your question by clicking on "Mark as Best Answer"
That's right, line 16 shows the amount I previously paid,
Line 20 is blank
Line 22 has the amount I should receive from federal (which they will send electronically).
So I don't need to send the 1040-V to the IRS?