I have had my CPR for about 5 months now and the only problem I ever had with it is my own stupidity. I used a bigger brush than I should have to try and clean the overflow box. The crack doesnt effect its function. I have almost flooded the house when I forgot to hook up the lifter. My only complaint about the lifter is that you should use dark tubes for the water/air lines. Dont want algea building up in those tubes.