i am a contractor and my customer has a shower faucet with a main temp control/on off valve. There are 4 separate shower heads in the configuration of the shower, one of the diverters leading to a set of shower heads is allowing water to leak through into the head constanly. I have disassembled the part to find 2 discs which i believe to be ceramic which float on each other as the position of the handle changes. Both of these discs are broken. One has 2 triangular slots cut in it while the other is shaped in a triangle to correspond with the holes. i need both discs and or whatever else is in a repair kit to assure that the diverter no longer leaks through. Thanks