Greetings, I purchased the CM storm devastator II mouse and keyboard combo about a year ago. The mouse's side button, (Back button), has been quite a hassle for gaming as it doesn't always register the thumb press. Often it requires multi-pressing or applying lots of pressure for it to register, which cause undesired effects. I've opened it up inside to look around for broken or loose bits, but all is fine inside. I only noticed that "back" button has a noticeable gap between the plastic button and the contact inside the mouse which seems to be the issue. It feels very loose. Is there a way to fix this? Is it possible to just buy the same mouse separately? I love this combo keyboard and mouse. The mouse's "light" feel and construction really feels comfortable for my fingertip grip playstyle. I would love to have a good experience with a non-defective mouse. Thank you for your assistance.