Delivery and condition properly. At the first fitting more easily change - out and new part screw - done. Then two taps, where I got out the old not with brute force arrived, they were eingekalkt. As I have already fought often with vinegar calcifications (kettle), was natural to do so here - but how? Having just had a bottle of Coke empty, I was struck by the closure of the bottle diameter. Tried on the valve, the shutter stopped of its own accord. So the closure with vinegar filled and taken to the old eingekalkten aerator - try 40 minutes later - change performed smoothly.
