Arrived at customers house Customer stated that one of the toilets we installed is continuously running when flushed Flushed toilet 30 times and got the toilet to re create problem Loosened cartridge to the toilet Flushed toilet a few times Toilet is still running Tightened cartridge Flushed toilet a few times Toilet is still running Shut water off to the toilet Flushed toilet to remove pressure Removed cartridge Installed a new cartridge Flushed toilet 30 times Toilet is running as designed