I got my 910 D2 has a gift a couple years ago from an ex-girlfriend. While I was cleaning my clubs, I discovered what might be a hairline crack in the face near the toe. I did the water test, which didn't yield any bubbles, but I've heard that it isn't always 100% proof.
I don't have the receipt and we are no longer on speaking terms. Am I SOL, or will Titleist warranty the head?