A parts fellar told me my existing piston is "proprietary" and I would have to find the installer to buy a new piston. The trouble is, I have no way of finding the installer
The difference is the metal part of the piston at the top. Compare my picture to this Fleck 5600 piston http://www.softnerparts.com/product/...346010200.html
Where can I find a replacement for the one in my picture?