I just had my front steps replaced using granite slabs. Becuase the granite used did not come in the size I needed ( 11 feet), the mason used two slabs per step. There a small seam where the slabs meet. My question is should the seem be filled in with some type of mortar. I would asked the mason but he has disapppered. He des not respond to emails, cell , business or home voice mail. He seems to have left jobs unattended all over the town. I have only paid him 50 % of the job, I am sure he will be back. I am concerned that having that small seem in the steps may cause me a problem. Is the open a issue that I should address now with somebody else . thanks