I was living in Aruba and purchased a beautiful one piece toliet there and had it shipped back to the US,now I cannot find the correct closet flange so that I can install the tolie. It is a new construction on a wood foundation. The toliet has a porceline ledge on the bottom and the closet flange fits more towards the front of the toliet. Is there just on standard size closet flange or do the come in different diameters.