Had this faucet professionally installed a month ago.  Nice appearance but thumping noise unacceptable. Tried "easy" fixes but will have to take apart this BRAND NEW faucet to try to fix what may be the diverter issue. So I have paid for the faucet AND the installation and the installer has to come back to try to fix it. Waste of time and money.  As a previous reviewer noted, the frequency of this complaint likely indicates a design flaw, so why is it unresolved? Wish I had heeded negative reviews prior to purchase.