Went to look at a walkway this morning where the pavers were sinking. 3.5'x35'. At the front steps is was down a good 3inches and carried that way in waves trough out. All the pavers were loose with almost no sand in between. I pulled out a few and there was about an inch of sand underneath but they all had about 1/2inch of space between pavers. Also didnt see any edging unless the lawn just grew over it. Right now were looking at pulling out the pavers, bringing up the gravel base as needed, and reusing the old pavers. I figured about 10% new pavers mixed in if need probably on the cuts. Am I on the right track here, any pro-tips to help me along here.