Upon arrival to the location, I met security who called unit number to assure someone was there. Moreover, when I got upstairs, the tenants were still there from my previous visit. I got to the bathroom, shut the emergency valve off and removed the old flush valve. I got the new one situated and assured no leaks before applying the flapper. I then got it all connected and filled the tank and took a photo of the water level and after 6 mins the level held. In addition, on my previous visit, after 6 mins the level had dropped. Hence, all is well at the moment. Tech will furnish and install new 3” flush valve with flush seal and assure no more leaks. 1 year part and labor warranty.