I would just increase the loop and adjust my anchors to suit (which you probably won't notice a difference in) with the 29" but if I were a betting man,I would bet the Bow is already pulling over 29" with the 29" cam.
Another option would be to remove the grip and just put athletic tape around the riser and shoot it as is.This is how I would have to shoot a Mathews.
I am pretty much the same as you and shoot a really long loop,but it works for me because I also have a long nose.[&:]
