Purchased an expensive Kohler faucet, and less than 6 months of usage the handle comes loose and falls off. Turns out it's just a mini screw that attaches the handle to the faucet, and the fit is designed loose. I've tried screwing it back on but the threads are worn. This is extremely poor engineering considering the handle is used on a daily basis. I'm no engineer, but I can see this faucet handle fail a mile away.