No answers huh? I have a Turtle Beach PX5 wireless headset and it's pretty much the best headset I've ever used, but I tend to take very good care of my stuff, especially electronic things. This would explain why there have been a ton of complaints both here and online regarding Turtle Beach, including your specific model. One troubling review said that the plastic breaks nearest the ear cups [http://www.amazon.com/review/R1F0ZFXXLVETEC/ref=cm_cr_pr_viewpnt#R1F0ZFXXLVETEC].
Bearing all that in mind, I would sell your headset and get almost any other brand [http://www.pcmag.com/article2/0,2817,2395840,00.asp]. The vast majority of the things I've read about Turtle Beach seem to indicate that I just got lucky is all.
Whatever you decide to get, oversized ear cups are the way to go, regardless of the brand.