How do axles, cams and risers get bent? Is it from abuse or what? Now I'm beginnning to think that there is a serviceable life of a bow and then it has to be reconditioned or tuned up, is that right? I think it would be easy to buy a used bow that is a piece of junk without even knowing it now. How do you feel about buying a bow online as opposed to going to a shop and paying more for it? Online has got to be the cheapest place to buy a bow.