Nuge, the thing is that YOU don't fix it. You should not have to. Now that you are aware of the problem then you know to check out a bow before you lay your money on the counter. You check the actual bow you are interested in buying. It's your money and you should demand the best for it. And don't trust somebody in a shop to do it for you.

As mentioned you can twist up one side of a yoke to align an idler wheel but for the cam you are pretty much stuck with what you got.