Need reply for double coil plastic housing.

Thanks for posting. Unfortunately this Simonton system and all its associated components are discontinued and no longer made. Because of this we offer an alternative solution. See the 15-259 Pivot Shoe, which works WIth Series 159 Coil Balance springs. I am afraid you would have to replace the entire assembly, but this conversion does work. We have a video that takes you through the process. See below.