My pompeii oven is complete but the door opening was done too large. The diameter of the oven is 41 inches with a 22 3/4 inch dome height. My opening is 20 1/4 inch wide, with a center height of 17 inches & sides of 13 inches. Math was never my forte, anybody know what I should modify the opening to be? I think the width is fine but what the hell should the sides and center be??? I am ready to make the modification but want to be sure. Based on this 63% thingy, does that mean that my center should be approximately 14 inches, with sides of 11 inches?? MAYBE I SHOULD GO WITH THE RECOMMENDED 12 1/2 CENTER WITH 10 INCH SIDES!!!SOMEBODY PLEASE HELP, I WANT PIZZA .......