I've just purchased a Selle Italia Flite Gel Flow saddle. I'm replacing a Specialized Gel Toupe. I noticed (only when I went to switch them out) that the rails of the old Specialized saddle are round and the rails of the Selle Italia saddle are an oval shape with flat sides. The hardware that comes with the Specialized seat post (holds the rails to the post) is clearly meant for round rails. Does it matter if I use the existing hardware (will it damage the saddle rails or seat post hardware), or do I need to find hardware or a seat post that will accommodate the flat sided rails? Thanks for any feedback.