What crank did you buy? I'm hoping you didn't settle for the naraku stuff, they are not the best QC.
TOP is always a decently priced option
But you can't go wrong with the Malossi or Polini options, but they are $50+ more.
Describing you application a little more might help. I spent a long time hunting down the variator for my Sacre motor, so I have some experience trudging through scoot parts.