Tried to upload a short video but couldn’t. 2 months ago I installed a new tub and all the new parts that go with it. Every time I turn the water on the first few seconds have a brownish tint to it. I figured it would clear up in a day or 3 but 2 months later it’s still there. Wasn’t there before and no other spigot in the house does this, just my tub. The water lines was copper and I replaced that from the floor up to all the new parts with PEX. Any clue?