Patient and professional. He listened to my concerns and took care of my followup issues. I like my counter and am enjoying my new kitchen.
What I did not do was check more thoroughly and in more detail to be sure my new sink had no marks and that the lower window sill was not scarred. I am not able to fix it. I imagine the curtains will cover the bottom window sill. The marks on the left side of the upper portion of the sink is not too noticeable. One can see it when wiping or cleaning the left side of the sink.
Having the drilling of the counter at my home was not a good idea. I spent days cleaning all the drilling of dust that permeated my home. Other than that, Yanovic is very good to work with, because he is responsive and will work with you to complete the installation in a manner that is satisfactory and professional.
Also, the pricing for his services is very reasonable.