I think there is some truth to post #3 , in that where you are sitting is wider tan you have space for. But it may not be altogether due to a wider saddle. There would be the same effect of too much width if the saddle were tipped a bit back so that you slid aft just a bit. I have a saddle with a cut out also. If it begins to cause discomfort, I either slid forward or drop the nose of the saddle a touch.