They work very well when installed correctly provided the brake system is in good shape and the shoes have been arced to fit the drums. There is additional information available that may be helpful to you.
Go to
www.ocmafc.com. In the left menu click on "tech articles". It will bring up a new menu. There are two articles posted that appeared in Model A Times, and have been re-printed with the permission of John LaVoy. Also, at the top of the tech menu is my name, click on it and it will bring up another menu of articles. One is about the installation of Ted's floaters.
Tom Endy