cowhorsecassidy

I have a McCall saddle, it has a ridge on the cantel and then a cheyenne roll, the ridge bothers me, if I unstich the cheyenne roll, peel the back of the seat back can i carve that ridge out? then put it back together, just not as comfy as my old custom saddle...my old saddle has a 5 in cantel, can you build up a 4 1/4in cantel to a 5 ?