Can anyone tell me who makes this faucet? I'm looking to replace an o-ring that has literally disintegrated and now causes water to leak out the shower holes even when the handle is not compressed. I'll try to describe what is happening but I'm not sure of all the technical terms. The handle can be compressed. When in the open position, the water runs through a 1" diameter aerator. When the handle is compressed, the water is routed to holes surrounding the aerator that cause a shower. The handle pushes a piston which diverts the water to either go through the aerator or through the many holes for the rain shower. The piston has an o-ring that moves to block or open the pathway for water to run to the aerator. Since the o-ring is gone, when the handle is pushed, water flows both the aerator and the rain shower holes. I hope if someone could tell me who makes this faucet, then I could try look up the side of the o-ring that is wrapped around the piston. I've tried a few size o-rings from Home Depot but none fit just right.