Customer had a toilet gurgling whenever they were running the kitchen sink, so upon arrival , I tested and saw it was a main line blockage that effected the entire house , so I gave the option to pull the toilet , once i pulled the toilet I saw the main line was full, so I ran my cable and I was able to clear the blockage and after testing the entire house the blockage was gone and no leaks scheduled for a camera tech to come tomorrow to pull the guest bathroom toilet and run the camera to inspect the cast-iron and leave a quote to replace all cast-iron