Friend of mine purchased an old myles keller compound. He needs to adjust the draw length, so he needs new modules. I was told the cams are a darton cam, so I should be able to get some for him. Anyone know if that is true? And if so, anyone know where I can get them for him? I'm located in Canada. It's an impact plus, and he was told at a local bow shop that it isn't adjustable. I know some of them were. He isn't local to me so I can't look at it in person.