I think Carol, via the TSA website cleared this up. It is always better to check the actual source versus asking a random stranger on the internet or social media.

With all due respect to SXMScubaman, I am personally not a fan of this "give it a try" thing as it could lead to other difficulties. Do it "by the book" when in doubt. I would also suggest printing what the TSA indicates in this matter in case an agent may not be up to speed.