I honestly don't get it. I originally returned the helmet with 2 bars because it should have 3 bars and now it has 3 bars.
Did you mention the reason you returned it? In the world of game worn memorabilia, if someone returns a 2 bar helmet because it should have 3 bars (and states that ), it wouldn't be terribly shocking to see it appear looking a little different in the future.

I think it could simply be authenticated as a "beautiful Getty adjusted helmet".

Sometimes it may take a few tries before an item is 100% Authentic.