Sink works great now!
My Dad had his own tools out already, so gentleman used Dad's tools to work on problem. Dad felt service call should not have been as high since he used my Dad's tools. He did a good job so there was no problem with that. The sink was not a Halco installed sink and I told my Dad that also is why it was not a maintenance covered call under service membership.
dave did a very good job. we have always had very good service with Halco. thank you