Ace Pelizon Plumbing was called out on a sink replacement/swap out of same fixture. Ace Pelizon Plumbing found existing kohler double sink chipping/cracking on corners. Customer had sink replaced and shipped to home by kohler. Customer also had new faucet to install on sink at this time. Ace Pelizon Plumbing shut water off to fixture and remove all existing drain piping and faucet/connections. Will remove existing sink and prep/clean counter top for install of new sink. Ace Pelizon Plumbing will install new faucet and connect original garbage disposal and install new drain piping at this time. Will include install of airgap for dishwasher. Removed existing sink and drain piping. Installed new connection from wall. Removed new sink from packaging and performed a dry fit of sink. ****found sink casting to be irregular at front side of sink. Front of sink bows up in center and is not flat. This sink can not be installed. Informed customer of issue on sink. Emailed photos to customer to