Customer was concerned system not operating properly due to taking 11hrs to drop 10degrees. System checks out perfectly with a delta T split of 23F! Pressures also look good at condenser. Current outgoing air temp is 47.3F with incoming of 70.7F! Noticed about a 15deg drop from air handler to the farthest room she was concerned about and elevated ceiling drywall temps throughout home. As discussed before our recommended solution is a ductwork revision and increase in insulation as well as sealing penetrating lights etc in attic to minimize heat transfer from attic to home! Customer stated that she will soon have the rental units systems paid off and may be ready to re visit ductwork and insulation for this home after that. System is operating correctly at this time!