I need to replace my kitchen sink basket/strainer/drain with a new one. I'm not sure how these are sized. Mine is 3 1/4" across the hole opening, and 4" from outer lip edges. But most replacements I'm seeing online & in stores say 3 1/2" (or occasionally 3 1/2" - 4".) So my question is this: Are all sink basket/strainer/drains standard? Is there a way to make a 3 1/2" basket work in my sink? My house was built in 1993, so not horribly old. (I've seen them called all three - basket, strainer, and drain--so that's why I've listed it like that.) Thanks for the help.