I went with Onyx because I was told they could do ...

I went with Onyx because I was told they could do custom work. I needed a sink that would measure 23 3/4" wide. I got it in 3 times and each time it was 24". Each attempt to put it on the vanity causes severe scratches to the cabinets on both sides of the vanity. I tried sanding the sides down, only to have the sink chip and is now off center. Not much, but I know it. I've decided to junk this POS and go with a local bathroom contractor and have a truly custom sink made. I wish I had done that in the beginning. I wanted to do the work myself, but I won't wait another 2 months to not have this fit again! Hey, Onyx - Get a tape measure!