Similar issue I had one that had a hairline crack in one of the inner water channels so small I only found it with a flashlight shining down through the bowl, took it back to Lowe's with flashlight in hand and was told there was nothing they could due even if it is a factory defect, called AS from the parking lot got a hold of the BEST CSR I have ever spoken to, he said he was calling the store right now which he did and told me everything was taken care of, so I took the toilet back inside and was chewed out by the manager for calling AS....needless the conversation went downhill but I got a new toilet