Razer trinity mouse

Hi. I bought a razer trinity mouse 6 weeks ago. Everything has been going fine until the last week or so. The problem is the mouse wheel! it becomes fairly hard to scroll down, i read a few posts and saw its a common problem. Is there any advice i can have to fix this? It feels as if it gets stuck when i scroll down, scrolling up is fine. I have to use more force for it to work.