Agree with the IRMN, the IRS is probably never gonna look at it and I doubt filing a hardcopy with the header would get you better mileage (of course, unless you count the actual mileage the return will need to travel on the road and the steps folks will take to bring files back and forth from those containers sitting in the IRS' lots - when, not if, they get to it).

If you must, even though there are no regulatory or even instructional requirements to include any text in the header, and doing so let you sleep better at night, don't wait for Intuit to respond - if you wait, you may never file the return ever.  You can simply add any text you want - yes, any - on Screen 3 by scrolling down to the line Explanation on top of Form 1065 [O].