Hi. I'm Smitty. I am a professional appliance repair consultant here to help you diagnose, and repair, your appliance. This site indicates that they have one. http://www.manweilerappliances.com/en/catalog/product/91352-Whirlpool-RBS245PRT
I just tried the cart at this site and it was good.
Let me know if these do not work for you and I will continue the search.
That model is no longer available at Mannweiler's either. Other ideas?
We're looking for a unit that is 24" wide, electric, self-cleaning and bisque, almond or beige in color. Brand doesn't really matter. Color is what causes the problem. Hope you both have an enjoyable evening,