Review on Fun 659302 Replacement Unicycle Saddle by Jason Adams

The saddle itself is probably fine and the problem could be me and my knowledge of how to buy unicycle saddles. However, this is done without the ability to attach the seat to the post. I assume you replace the saddle with the exact same one as the old one and have the attachment. I was looking for a replacement for a different type of saddle and needed a post mount. Now I'm stuck with a saddle I can't use and can't find a solution. Note that only 4 screws protrude from the bottom of the seat for mounting.