Sony Ericsson k750i - Dodgy Thumbsticks

Sony Ericsson phones have been my phone of choice for about 3 years now. They have the lead on Nokia, Samsung etc on phone design and actual phone software in my opinion. When I bought the k750i on contract I was quite surprised with how far they had gone with this phone. The screen display was amazing, the MP3 player top quality, a 2 megapixel camera and so on. But after 8 months, the thumbstick control became a little sticky. It became difficult to navigate through menus and to read messages.