I pulled out my old mtn. bike from the garage after about 8 years. Before it was garaged, the gearing worked fine. But I started riding it the range of gears slowly diminished until I only have one gear I'm left in. Luckily, it's the easiest gear so I can still use it if I need to but it happened to the front and the back gears. Someone suggested I open the levers, give them a cleaning and a relube and try it again. I did that and still nothing works. When I push one of the two levers something inside moves just a little bit but not enough to engage any of the other moving parts in it. The other lever has no resistance and does nothing. Any siggestions on what I can do, or do they sound shot?

Tiff