On arrival the customer showed us the toilet that had the minor rebuild done and explained that the toilet was periodically filling the tank up. We went ahead and dropped dye tabs in the tank and waited 10 minutes and there was dye in the toilet bowl. We wrote an estimate for a major rebuild without a fill valve and deducted some since we weren’t doing the fill valve. We tested everything for functionality and leaks and everything was working as should with no leaks. Replace flush valve in existing Kohler Wellworth toilet. Note:minor rebuilt was done previously however flush valve was not replaced and water was running into bowl after completing a dye tab test.