Alex replaced the entire flushing mechanisms on my three toilets. He was very professional & efficient. One toilet was running & Alex came back the same afternoon to fix the problem, he hoped. He had warned me that older toilets (15 yrs) sometimes had handle issues after replacing the flappers. As predicted, the chain from the handle got twisted & did not allow the flapper to close, thus the toilets would not fill & I had to call again. This time Hugh, the owner, came over & fixed all three. If his repair does not work, he assures me he will figure out the right thing to do. I am very appreciative that they stand behind their work will make sure everything works properly. I would definitely use them again.