Trackball: Too Much Pressure

Hello,

I couldn't find a thread on this, but my question is, does anyone know how to fix the trackball when it takes a lot more pressure and pushing? It takes more than once or twice for me to enter every time I push it. Before it would be easy to push, I'm guessing I had it in my tight jeans pocket, and the pressure from the jeans pushed against the trackball making it become harder to push after taking it out. If you guys got any ideas, hit me up. Thanks in advance!