I'm thinking of getting a new bow. I have a Mathews right now and it's ok but I want more options in the future. I have back problems and will need a bow that is set around 60 or 65 lbs now and I can reduce the draw later on.

Question (which will show my lack of knowledge on new bows) do you always have to change the cam to get a lower/higher draw weight?? Is there a bow out there with an easier option?