Wow.. 2nd

You can put the remainder in carryover in order to see the tax savings.

Although slight, there is a possibility that this will delay the refund because the IRS might want to match it to the prior year.  Seems like a risky thing to me.  Let us know how it goes. 

(Side note:  testing the IRS computer capabilities in small ways like DJTENN is doing always interests me. I am for efforts to see what the IRS cares about.  Maybe this yields interesting info.)