Hi to everyone! I'm courrently having an odd situation to which i'm not being able to find an answer. We have recently change our chilling method from a cooper counterflow chiller to a plate chiller (Duda diesel, 20 large plates). The thing is that since we stated using it our beers started to have ea particular off flavor, slightly salty and with a really strong biter and dry taste. Any ideas of what could be happening? Thanks to all!