goowiz

Hello, so just got the Custom-3s. I love everything about them except their sound on the high ends. They seem muffled, or just not clear at all... Is this because of a bad fit? I've only had them for a day, but I'm already thinking of returning them for the X5... I am also thinking of getting different tips such as the Comply T-100, which I have read really good reviews on www.head-fi.org. Any recommendations on how to improve the top end?