This will be the third time I am replacing this strainer since original mid 2019 purchase. The disk on the underside of the basket that connects to the plunger arm/knob keeps coming apart form the arm and unscrewing. This piece is fixed to the arm when I receive it, but after a few months of use ultimately comes loose and unscrews with use. Seems like the soldering is poorly done or can't uphold to the conditions it is used in. Once this happens, it then is difficult to position the plunger properly so that it can open/close the drain. I don't know what the design or craftsmanship flaw is, but it's extremely annoying. I have explained the issue each time I call Kohler to have it replaced, however noone can explain or offer any different item. Because it is fitted to the sink, it's the only option. Am I stuck reordering this strainer basket every few months for life??