Hi Monch07, welcoem to the forums. Why doesn't it fit? It won't screw into the threads on the crank? You did unscrew the center part that pushes against the spinddle before trying to screw it into the crank right?
Are the threads in good shape? Is the crank a "standard" brand like shipmano, SR, Suntour, SRAM?
It is hard to see but there isn't anything still in there like part of a old plastic dust cap or something?
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk