We purchased this Grohe Eurotube kitchen faucet in 2019.  After 3 yrs the square filter part that screws off is making an unbearable noise and there is no available part to replace.  I don't want to replace the entire faucet for $758.00 just the screw on square part that contains the filter and has an ear shattering noise and restricts water flow now.  This part is essential to the sleek and sophisticated design of this faucet.  Grohe or Wayfair, can you help getting this part at a much reduced price?  I still love the look of this faucet but the noise is truly unbearable.