Basement bathroom continuing to back up after we corrected pitch under slab and on exterior of home. We flushed toilet multiple times and ran tub and sink last time and all were draining. Today arrived and found water was still draining, but very very slowly. Pulled toilet and camera’d from toilet. Found grease blockage that had occurred during the time before the pitch was corrected under the slab. Was able to clear most of the grease and restore flow. Ran all fixtures in downstairs bathroom to verify. Rerouted line has some spots that are flat, and branch line going to toilet is back pitched and holding approx 1” of water. Toilet is very old and I recommended we try replacing toilet before committing to jackhammering the slab under the bathroom. Left quote to replace toilet, also left quote to reroute the bathroom drains back to the existing drain that was previously capped off 6 years ago. Both lines have adequate depths where this would be possible. Branch line appears to be 3”. To