While working on fixing that uneven corner, I checked out httрs://oakshs.ca/kleinburg-interlocking-services/ for advice on proper installation techniques. They showed me how small adjustments to the slope, reinforcing the edges, and properly compacting the base can stop the stones from sinking over time. After applying these methods, the patio now stays perfectly level even after heavy rain, and that troublesome corner blends seamlessly with the rest. It’s such a relief to see the whole area solid and stable at last.