I bought a nice older Huffy ladies bike with the 3 speed. It has a black plastic cover at the lever with one screw. Anyway the plastic cover was busted and the cable wouldnt stay still, Took the screw out and everything fell apart before i could see how it was assembled. Can someone tell me how or show me where the parts go? Not much to it other than a tiny ball a piece of plastic and the base and lever but i cant figure it out. I assume its a Shimano but dont know how to tell what model. This looks like all 3 speeds i have ever seen.